Sequencing the using and try clauses as they were before, but this shows that that obsolete function is not catching 404's as it should...

OpenSim/Framework/WebUtil.cs

@@ -976,9 +976,9 @@ namespace OpenSim.Framework
                 }
             }
 
-            using (WebResponse resp = request.GetResponse())
-            {
             try
+            {
+                using (WebResponse resp = request.GetResponse())
                 {
                     if (resp.ContentLength > 0)
                     {
@@ -988,12 +988,12 @@ namespace OpenSim.Framework
                         respStream.Close();
                     }
                 }
+            }
             catch (System.InvalidOperationException)
             {
                 // This is what happens when there is invalid XML
                 m_log.WarnFormat("[SynchronousRestObjectRequester]: Invalid XML {0} {1}", requestUrl, typeof(TResponse).ToString());
             }
-            }
             return deserial;
         }
     }