I'm a new customer and I'm simply trying to implement the Spring Layout based on the sample code provided (http://examplesaspnetdiagram.nevron.com/ -> Layouts -> Spring Layout).  I can get the code to work if I omit the properties AjaxEnabled="True", OnAsyncCustomCommand and OnAsyncQueryCommandResult from the NDrawingView tag.  However if I leave them in I get the following run-time error... "NDiagramCallbackService is undefined".  I cannot find any documentation on "NDiagramCallbackService" (or course it doesn't help that the search function is not working on your documentation web site).

Any ideas what's going on?

Thanks

Jeremy