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[2]
I have tried changing the ScriptManager in the MasterPage to ToolkitScriptManager, but I keep getting the same error.
Comments: thanks dear_tahir it's work :), i only changed the propierty ScriptMode=release and then all works fine :P
Microsoft JScript runtime error: Sys.ArgumentNullException: Value cannot be null.
Parameter name: panelsCreated[2]
I have tried changing the ScriptManager in the MasterPage to ToolkitScriptManager, but I keep getting the same error.
Comments: thanks dear_tahir it's work :), i only changed the propierty ScriptMode=release and then all works fine :P