diff --git a/prebuild.xml b/prebuild.xml
index 621e0b457c..09336b3594 100644
--- a/prebuild.xml
+++ b/prebuild.xml
@@ -21,7 +21,7 @@
         <CompilerDefines>TRACE</CompilerDefines>
         <OptimizeCode>true</OptimizeCode>
         <CheckUnderflowOverflow>false</CheckUnderflowOverflow>
-        <AllowUnsafe>false</AllowUnsafe>
+        <AllowUnsafe>true</AllowUnsafe>
         <WarningLevel>4</WarningLevel>
         <WarningsAsErrors>false</WarningsAsErrors>
         <SuppressWarnings/>
@@ -34,7 +34,7 @@
 
     <!-- Core OpenSim Projects -->
 <!--
-        <Project frameworkVersion="v4_0" name="OpenSim.Model" path="OpenSim/Model" type="Library">
+        <Project frameworkVersion="v3_5" name="OpenSim.Model" path="OpenSim/Model" type="Library">
           <Configuration name="Debug">
             <Options>
               <OutputPath>../../../bin/</OutputPath>
@@ -55,7 +55,7 @@
         </Project>
 -->
 
-    <Project frameworkVersion="v4_0" name="SmartThreadPool" path="ThirdParty/SmartThreadPool" type="Library">
+    <Project frameworkVersion="v3_5" name="SmartThreadPool" path="ThirdParty/SmartThreadPool" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -77,7 +77,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework" path="OpenSim/Framework" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework" path="OpenSim/Framework" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -112,7 +112,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Monitoring" path="OpenSim/Framework/Monitoring" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Monitoring" path="OpenSim/Framework/Monitoring" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -138,7 +138,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Servers.HttpServer" path="OpenSim/Framework/Servers/HttpServer" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Servers.HttpServer" path="OpenSim/Framework/Servers/HttpServer" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -178,7 +178,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Console" path="OpenSim/Framework/Console" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Console" path="OpenSim/Framework/Console" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -205,7 +205,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.Interfaces" path="OpenSim/Services/Interfaces" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.Interfaces" path="OpenSim/Services/Interfaces" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -233,7 +233,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Serialization" path="OpenSim/Framework/Serialization" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Serialization" path="OpenSim/Framework/Serialization" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -262,7 +262,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Data" path="OpenSim/Data" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Data" path="OpenSim/Data" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -291,7 +291,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Configuration.XML" path="OpenSim/Framework/Configuration/XML" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Configuration.XML" path="OpenSim/Framework/Configuration/XML" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -316,7 +316,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Configuration.HTTP" path="OpenSim/Framework/Configuration/HTTP" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Configuration.HTTP" path="OpenSim/Framework/Configuration/HTTP" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -343,7 +343,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.AssetLoader.Filesystem" path="OpenSim/Framework/AssetLoader/Filesystem" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.AssetLoader.Filesystem" path="OpenSim/Framework/AssetLoader/Filesystem" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -368,7 +368,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.RegionLoader.Web" path="OpenSim/Framework/RegionLoader/Web" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.RegionLoader.Web" path="OpenSim/Framework/RegionLoader/Web" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -394,7 +394,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.RegionLoader.Filesystem" path="OpenSim/Framework/RegionLoader/Filesystem" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.RegionLoader.Filesystem" path="OpenSim/Framework/RegionLoader/Filesystem" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -420,7 +420,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Servers" path="OpenSim/Framework/Servers" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Servers" path="OpenSim/Framework/Servers" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -452,7 +452,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.Manager" path="OpenSim/Region/Physics/Manager" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.Manager" path="OpenSim/Region/Physics/Manager" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -480,7 +480,7 @@
     </Project>
 
     <!-- Physics Plug-ins -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.BasicPhysicsPlugin" path="OpenSim/Region/Physics/BasicPhysicsPlugin" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.BasicPhysicsPlugin" path="OpenSim/Region/Physics/BasicPhysicsPlugin" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -503,7 +503,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.POSPlugin" path="OpenSim/Region/Physics/POSPlugin" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.POSPlugin" path="OpenSim/Region/Physics/POSPlugin" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -526,7 +526,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.OdePlugin" path="OpenSim/Region/Physics/OdePlugin" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.OdePlugin" path="OpenSim/Region/Physics/OdePlugin" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -556,7 +556,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.ConvexDecompositionDotNet" path="OpenSim/Region/Physics/ConvexDecompositionDotNet" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.ConvexDecompositionDotNet" path="OpenSim/Region/Physics/ConvexDecompositionDotNet" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -581,7 +581,7 @@
       </Files>
     </Project>
 
- <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.ChOdePlugin" path="OpenSim/Region/Physics/ChOdePlugin" type="Library">
+ <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.ChOdePlugin" path="OpenSim/Region/Physics/ChOdePlugin" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -612,7 +612,7 @@
       </Files>
     </Project>
 
-   <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.UbitOdePlugin" path="OpenSim/Region/Physics/UbitOdePlugin" type="Library">
+   <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.UbitOdePlugin" path="OpenSim/Region/Physics/UbitOdePlugin" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -643,7 +643,7 @@
       </Files>
     </Project>	
 	
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.Meshing" path="OpenSim/Region/Physics/Meshing" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.Meshing" path="OpenSim/Region/Physics/Meshing" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -674,7 +674,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.UbitMeshing" path="OpenSim/Region/Physics/UbitMeshing" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.UbitMeshing" path="OpenSim/Region/Physics/UbitMeshing" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -706,7 +706,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Capabilities" path="OpenSim/Capabilities" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Capabilities" path="OpenSim/Capabilities" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -741,7 +741,7 @@
     </Project>
 
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Communications" path="OpenSim/Framework/Communications" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Communications" path="OpenSim/Framework/Communications" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -782,7 +782,7 @@
     </Project>
 
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Framework" path="OpenSim/Region/Framework" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Framework" path="OpenSim/Region/Framework" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -835,7 +835,7 @@
     <!-- OGS projects -->
 
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Server.Base" path="OpenSim/Server/Base" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Server.Base" path="OpenSim/Server/Base" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -865,7 +865,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.Base" path="OpenSim/Services/Base" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.Base" path="OpenSim/Services/Base" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -892,7 +892,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.UserAccountService" path="OpenSim/Services/UserAccountService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.UserAccountService" path="OpenSim/Services/UserAccountService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -923,7 +923,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.FriendsService" path="OpenSim/Services/Friends" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.FriendsService" path="OpenSim/Services/Friends" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -954,7 +954,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.Connectors" path="OpenSim/Services/Connectors" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.Connectors" path="OpenSim/Services/Connectors" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -993,7 +993,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.AssetService" path="OpenSim/Services/AssetService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.AssetService" path="OpenSim/Services/AssetService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1024,7 +1024,7 @@
       </Files>
     </Project>
     
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.AuthorizationService" path="OpenSim/Services/AuthorizationService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.AuthorizationService" path="OpenSim/Services/AuthorizationService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1055,7 +1055,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.FreeswitchService" path="OpenSim/Services/FreeswitchService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.FreeswitchService" path="OpenSim/Services/FreeswitchService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1087,7 +1087,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.AuthenticationService" path="OpenSim/Services/AuthenticationService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.AuthenticationService" path="OpenSim/Services/AuthenticationService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1120,7 +1120,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.GridService" path="OpenSim/Services/GridService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.GridService" path="OpenSim/Services/GridService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1154,7 +1154,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.PresenceService" path="OpenSim/Services/PresenceService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.PresenceService" path="OpenSim/Services/PresenceService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1185,7 +1185,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.AvatarService" path="OpenSim/Services/AvatarService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.AvatarService" path="OpenSim/Services/AvatarService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1216,7 +1216,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.InventoryService" path="OpenSim/Services/InventoryService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.InventoryService" path="OpenSim/Services/InventoryService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1249,7 +1249,7 @@
     </Project>
     
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.LLLoginService" path="OpenSim/Services/LLLoginService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.LLLoginService" path="OpenSim/Services/LLLoginService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1282,7 +1282,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.HypergridService" path="OpenSim/Services/HypergridService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.HypergridService" path="OpenSim/Services/HypergridService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1320,7 +1320,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Services.MapImageService" path="OpenSim/Services/MapImageService" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Services.MapImageService" path="OpenSim/Services/MapImageService" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1350,7 +1350,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Server.Handlers" path="OpenSim/Server/Handlers" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Server.Handlers" path="OpenSim/Server/Handlers" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1389,7 +1389,7 @@
     </Project>
 
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Capabilities.Handlers" path="OpenSim/Capabilities/Handlers" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Capabilities.Handlers" path="OpenSim/Capabilities/Handlers" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1430,7 +1430,7 @@
     </Project>
 
 
-    <Project frameworkVersion="v4_0" name="Robust" path="OpenSim/Server" type="Exe">
+    <Project frameworkVersion="v3_5" name="Robust" path="OpenSim/Server" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -1464,7 +1464,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.ConsoleClient" path="OpenSim/ConsoleClient" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.ConsoleClient" path="OpenSim/ConsoleClient" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -1496,7 +1496,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.CoreModules" path="OpenSim/Region/CoreModules" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.CoreModules" path="OpenSim/Region/CoreModules" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1562,7 +1562,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.RegionCombinerModule" path="OpenSim/Region/RegionCombinerModule" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.RegionCombinerModule" path="OpenSim/Region/RegionCombinerModule" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1600,7 +1600,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ClientStack" path="OpenSim/Region/ClientStack" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ClientStack" path="OpenSim/Region/ClientStack" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1635,7 +1635,7 @@
     </Project>
 
     <!-- ClientStack Plugins -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ClientStack.LindenUDP" path="OpenSim/Region/ClientStack/Linden/UDP" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ClientStack.LindenUDP" path="OpenSim/Region/ClientStack/Linden/UDP" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../bin/</OutputPath>
@@ -1678,7 +1678,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ClientStack.LindenCaps" path="OpenSim/Region/ClientStack/Linden/Caps" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ClientStack.LindenCaps" path="OpenSim/Region/ClientStack/Linden/Caps" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../bin/</OutputPath>
@@ -1720,7 +1720,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.OptionalModules" path="OpenSim/Region/OptionalModules" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.OptionalModules" path="OpenSim/Region/OptionalModules" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1777,7 +1777,7 @@
     </Project>
 
     <!-- Datastore Plugins -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Data.Null" path="OpenSim/Data/Null" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Data.Null" path="OpenSim/Data/Null" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1829,7 +1829,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.BulletSPlugin" path="OpenSim/Region/Physics/BulletSPlugin" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.BulletSPlugin" path="OpenSim/Region/Physics/BulletSPlugin" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/Physics/</OutputPath>
@@ -1863,7 +1863,7 @@
     </Project>
 
     <!-- OpenSim app -->
-    <Project frameworkVersion="v4_0" name="OpenSim" path="OpenSim/Region/Application" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim" path="OpenSim/Region/Application" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1907,7 +1907,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.ApplicationPlugins.LoadRegions" path="OpenSim/ApplicationPlugins/LoadRegions" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.ApplicationPlugins.LoadRegions" path="OpenSim/ApplicationPlugins/LoadRegions" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1942,7 +1942,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.ApplicationPlugins.RegionModulesController" path="OpenSim/ApplicationPlugins/RegionModulesController" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.ApplicationPlugins.RegionModulesController" path="OpenSim/ApplicationPlugins/RegionModulesController" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -1972,7 +1972,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.ApplicationPlugins.RemoteController" path="OpenSim/ApplicationPlugins/RemoteController" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.ApplicationPlugins.RemoteController" path="OpenSim/ApplicationPlugins/RemoteController" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2013,7 +2013,7 @@
     </Project>
 
     <!-- REST plugins -->
-    <Project frameworkVersion="v4_0" name="OpenSim.ApplicationPlugins.Rest" path="OpenSim/ApplicationPlugins/Rest" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.ApplicationPlugins.Rest" path="OpenSim/ApplicationPlugins/Rest" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2048,7 +2048,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.ApplicationPlugins.Rest.Regions" path="OpenSim/ApplicationPlugins/Rest/Regions" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.ApplicationPlugins.Rest.Regions" path="OpenSim/ApplicationPlugins/Rest/Regions" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2085,7 +2085,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.ApplicationPlugins.Rest.Inventory" path="OpenSim/ApplicationPlugins/Rest/Inventory" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.ApplicationPlugins.Rest.Inventory" path="OpenSim/ApplicationPlugins/Rest/Inventory" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2129,7 +2129,7 @@
 
     <!-- Scene Server API Example Apps -->
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.DataSnapshot" path="OpenSim/Region/DataSnapshot" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.DataSnapshot" path="OpenSim/Region/DataSnapshot" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2166,7 +2166,7 @@
     </Project>
 
     <!-- Data Base Modules -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Data.MySQL" path="OpenSim/Data/MySQL" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Data.MySQL" path="OpenSim/Data/MySQL" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2204,7 +2204,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Data.MSSQL" path="OpenSim/Data/MSSQL" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Data.MSSQL" path="OpenSim/Data/MSSQL" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2238,7 +2238,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Data.SQLite" path="OpenSim/Data/SQLite" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Data.SQLite" path="OpenSim/Data/SQLite" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2279,7 +2279,7 @@
     </Project>
 
     
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Shared" path="OpenSim/Region/ScriptEngine/Shared" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Shared" path="OpenSim/Region/ScriptEngine/Shared" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2317,7 +2317,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Shared.Api.Runtime" path="OpenSim/Region/ScriptEngine/Shared/Api/Runtime" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Shared.Api.Runtime" path="OpenSim/Region/ScriptEngine/Shared/Api/Runtime" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../../bin/</OutputPath>
@@ -2350,7 +2350,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Shared.YieldProlog" path="OpenSim/Region/ScriptEngine/Shared/Api/Runtime/YieldProlog/" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Shared.YieldProlog" path="OpenSim/Region/ScriptEngine/Shared/Api/Runtime/YieldProlog/" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../../../bin/</OutputPath>
@@ -2382,7 +2382,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Shared.Api" path="OpenSim/Region/ScriptEngine/Shared/Api/Implementation" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Shared.Api" path="OpenSim/Region/ScriptEngine/Shared/Api/Implementation" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../../bin/</OutputPath>
@@ -2422,7 +2422,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Shared.CodeTools" path="OpenSim/Region/ScriptEngine/Shared/CodeTools" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Shared.CodeTools" path="OpenSim/Region/ScriptEngine/Shared/CodeTools" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../bin/</OutputPath>
@@ -2453,7 +2453,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Shared.Instance" path="OpenSim/Region/ScriptEngine/Shared/Instance" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Shared.Instance" path="OpenSim/Region/ScriptEngine/Shared/Instance" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../bin/</OutputPath>
@@ -2491,7 +2491,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.XEngine" path="OpenSim/Region/ScriptEngine/XEngine" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.XEngine" path="OpenSim/Region/ScriptEngine/XEngine" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2533,7 +2533,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.UserStatistics" path="OpenSim/Region/UserStatistics" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.UserStatistics" path="OpenSim/Region/UserStatistics" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2584,7 +2584,7 @@
 
     <!-- Tools -->
 
-    <Project frameworkVersion="v4_0" name="pCampBot" path="OpenSim/Tools/pCampBot" type="Exe">
+    <Project frameworkVersion="v3_5" name="pCampBot" path="OpenSim/Tools/pCampBot" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2611,7 +2611,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tools.lslc" path="OpenSim/Tools/Compiler" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tools.lslc" path="OpenSim/Tools/Compiler" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2638,7 +2638,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tools.Configger" path="OpenSim/Tools/Configger" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tools.Configger" path="OpenSim/Tools/Configger" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2662,7 +2662,7 @@
     </Project>
 
     <!-- Test Clients -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Clients.GridClient" path="OpenSim/Tests/Clients/Grid" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests.Clients.GridClient" path="OpenSim/Tests/Clients/Grid" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2689,7 +2689,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Clients.PresenceClient" path="OpenSim/Tests/Clients/Presence" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests.Clients.PresenceClient" path="OpenSim/Tests/Clients/Presence" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2716,7 +2716,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Clients.UserAccountClient" path="OpenSim/Tests/Clients/UserAccounts" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests.Clients.UserAccountClient" path="OpenSim/Tests/Clients/UserAccounts" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2743,7 +2743,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Clients.InstantantMessage" path="OpenSim/Tests/Clients/InstantMessage" type="Exe">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests.Clients.InstantantMessage" path="OpenSim/Tests/Clients/InstantMessage" type="Exe">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2771,7 +2771,7 @@
     </Project>
 
     <!-- Test assemblies -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Common" path="OpenSim/Tests/Common" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests.Common" path="OpenSim/Tests/Common" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2815,7 +2815,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests" path="OpenSim/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests" path="OpenSim/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../bin/</OutputPath>
@@ -2838,7 +2838,7 @@
     </Project>
 
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Capabilities.Handlers.Tests" path="OpenSim/Capabilities/Handlers" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Capabilities.Handlers.Tests" path="OpenSim/Capabilities/Handlers" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2888,7 +2888,7 @@
     </Project>
 
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Data.Tests" path="OpenSim/Data/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Data.Tests" path="OpenSim/Data/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2930,7 +2930,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Tests" path="OpenSim/Framework/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Tests" path="OpenSim/Framework/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -2961,7 +2961,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Serialization.Tests" path="OpenSim/Framework/Serialization/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Serialization.Tests" path="OpenSim/Framework/Serialization/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -2992,7 +2992,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Framework.Servers.Tests" path="OpenSim/Framework/Servers/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Framework.Servers.Tests" path="OpenSim/Framework/Servers/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../bin/</OutputPath>
@@ -3022,7 +3022,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.CoreModules.Tests" path="OpenSim/Region/CoreModules" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.CoreModules.Tests" path="OpenSim/Region/CoreModules" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -3095,7 +3095,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.OptionalModules.Tests" path="OpenSim/Region/OptionalModules" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.OptionalModules.Tests" path="OpenSim/Region/OptionalModules" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -3154,7 +3154,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Framework.Tests" path="OpenSim/Region/Framework" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Framework.Tests" path="OpenSim/Region/Framework" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -3213,7 +3213,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ClientStack.LindenCaps.Tests" path="OpenSim/Region/ClientStack/Linden/Caps" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ClientStack.LindenCaps.Tests" path="OpenSim/Region/ClientStack/Linden/Caps" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../bin/</OutputPath>
@@ -3250,7 +3250,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ClientStack.LindenUDP.Tests" path="OpenSim/Region/ClientStack/Linden/UDP/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ClientStack.LindenUDP.Tests" path="OpenSim/Region/ClientStack/Linden/UDP/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../../bin/</OutputPath>
@@ -3286,7 +3286,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.ScriptEngine.Tests" path="OpenSim/Region/ScriptEngine" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.ScriptEngine.Tests" path="OpenSim/Region/ScriptEngine" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>
@@ -3340,7 +3340,7 @@
            TODO: this is kind of lame, we basically build a duplicate
            assembly but with tests added in, just because we can't resolve cross-bin-dir-refs.
       -->
-    <Project frameworkVersion="v4_0" name="OpenSim.Region.Physics.OdePlugin.Tests" path="OpenSim/Region/Physics/OdePlugin/Tests" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Region.Physics.OdePlugin.Tests" path="OpenSim/Region/Physics/OdePlugin/Tests" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../../../bin/</OutputPath>
@@ -3370,7 +3370,7 @@
       </Files>
     </Project>
 
-    <Project frameworkVersion="v4_0" name="OpenSim.Tests.Torture" path="OpenSim/Tests/Torture" type="Library">
+    <Project frameworkVersion="v3_5" name="OpenSim.Tests.Torture" path="OpenSim/Tests/Torture" type="Library">
       <Configuration name="Debug">
         <Options>
           <OutputPath>../../../bin/</OutputPath>