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Ajax Toolkit 4 does not work with ReportViewer 10
After upgrading a project to use .net 4 and the new download I get the following error message for a page that contains a ReportViewer control version 10:
Microsoft JScript runtime error: Sys.ArgumentNullException: Value cannot be null.
Parameter name: panelsCreated
I have tried changing the ScriptManager in the MasterPage to ToolkitScriptManager, but I keep getting the same error.