* Removing unnecessary LLUUID.Zero check from AssetCache

* This revision also includes a very temporary fix for the fact that NREs are received because of a missing avatar apperance in grid mode

OpenSim/Framework/IAssetServer.cs

@@ -41,7 +41,10 @@ namespace OpenSim.Framework
         void Close();
     }
 
-    // could change to delegate?
+    /// <summary>
+    /// Implemented by classes which with to asynchronously receive asset data from the asset service
+    /// </summary>
+    /// <remarks>could change to delegate?</remarks>
     public interface IAssetReceiver
     {
         /// <summary>
@@ -62,4 +65,4 @@ namespace OpenSim.Framework
     {
         IAssetServer GetAssetServer();
     }
-}
+}