Ok, this might be an IE 6 thing. Firefox works just fine, no javascript errors. Anyone has a quick fix for IE6?

Build 9.2.20092.2137

I get the same js error when paging in webdatagrid in 2009.2.2037 –

Microsoft JScript runtime error: Sys.ArgumentException: Value must not be null for Controls and Behaviors.

If I remove all EditorProviders for the webdatagrid, this error goes away.

Anyone has a solution?

IE 6. (sorry, company mandated dinosaur browser).