* If a region running in grid mode fails to login to the grid service, startup will now terminate instead of carrying on (and thus burying the error message)

OpenSim/Region/Application/OpenSimMain.cs

@@ -569,7 +569,18 @@ namespace OpenSim
             //moved these here as the terrain texture has to be created after the modules are initialized
             // and has to happen before the region is registered with the grid. 
             scene.CreateTerrainTexture(true);
-            scene.RegisterRegionWithGrid();
+            
+            try
+            {
+                scene.RegisterRegionWithGrid();
+            }
+            catch (Exception e)
+            {
+                m_log.ErrorFormat("[STARTUP]: Registration of region with grid failed, aborting startup - {0}", e);
+                
+                // Carrying on now causes a lot of confusion down the line - we need to get the user's attention
+                System.Environment.Exit(1);
+            }
             
             // We need to do this after we've initialized the scripting engines.
             scene.StartScripts();