Hi,
I am using Telerik RAD controls(RAD Combo, RAD TextBox ,RAD Tab etc) inside update panel. It was working fine just a few days back. Now I am getting error "Microsoft JScript runtime error: Sys.ArgumentUndefinedException: Value cannot be undefined.
Parameter name: id" before page load. I am using VS2010, framework 4.0 with Win-XP. It is always occurring on a single page while others are working fine. I matched Telerik version from Web.config and in Reference added (not using GAC here). I'd also added AJAXToolkit dll and added in reference of project. I also tried with removing Update Panel but got same result.
I am using Telerik RAD controls(RAD Combo, RAD TextBox ,RAD Tab etc) inside update panel. It was working fine just a few days back. Now I am getting error "Microsoft JScript runtime error: Sys.ArgumentUndefinedException: Value cannot be undefined.
Parameter name: id" before page load. I am using VS2010, framework 4.0 with Win-XP. It is always occurring on a single page while others are working fine. I matched Telerik version from Web.config and in Reference added (not using GAC here). I'd also added AJAXToolkit dll and added in reference of project. I also tried with removing Update Panel but got same result.