jscript runtime error

I recently started getting this error.  The application was running fine, the only change we made as by changing the domain of the server used internally in out company.  This error occurs after the page has already launched and the user changes some parameters that causes a new query.

Would that error have to do with the server domain change we made?

Thanks

Any help would be appreciated.

Microsoft JScript runtime error: Sys.WebForms.PageRequestManagerServerErrorException: Invalid postback or callback argument.  Event validation is enabled using <pages enableEventValidation="true"/> in configuration or <%@ Page EnableEventValidation="true" %> in a page.  For security purposes, this feature verifies that arguments to postback or callback events originate from the server control that originally rendered them.  If the data is valid and expected, use the ClientScriptManager.RegisterForEventValidation method in order to register the postback or callback data for validation.