diff --git a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
index 5a48134b66..bbf7be745c 100755
--- a/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
+++ b/OpenSim/Region/CoreModules/Asset/FlotsamAssetCache.cs
@@ -337,8 +337,10 @@ namespace OpenSim.Region.CoreModules.Asset
 
                     }
 
-                    Util.FireAndForget(
-                        delegate { WriteFileCache(filename, asset); }, null, "FlotsamAssetCache.UpdateFileCache");
+                    // Util.FireAndForget(
+                    //   delegate { WriteFileCache(filename, asset); }, null, "FlotsamAssetCache.UpdateFileCache");
+                    //this must be sync
+                    WriteFileCache(filename, asset);
                 }
             }
             catch (Exception e)
@@ -800,6 +802,7 @@ namespace OpenSim.Region.CoreModules.Asset
                     stream = File.Open(tempname, FileMode.Create);
                     BinaryFormatter bformatter = new BinaryFormatter();
                     bformatter.Serialize(stream, asset);
+                    stream.Flush();
                 }
                 catch (IOException e)
                 {