I have a web application that was built using Visual Studio 2008. I am also using AjaxControlToolKit.
I recently upgraded the AjaxControlToolkit to the version released on November 16, 2011 (from the version released April, 2011).
Now, I get error messages that say "Error Creating Control - ToolkitScriptManager1"
"Error Creating Control - ContentPlaceHolder1"
I am unable to see any of my pages under DesignView and cannot update the website until this issue is resolved.
ANY HELP would be greatly appreciated. "URGENT"