I am using a PopupControlExtender in an asp.net web page that gets dynamic content from a page method and displays it to the user in a Panel. It works great using local file system from the VS2008 , but when it runs from the web server the PopupControlExtender is not working and the server eventlog writes an error generated from the Page_Load method:
" [System.NullReferenceException] Object reference not set to an instance of an object". I know what that means but I cannot figure out why it only happens on the web server.
1. I have confirmed that the correct AJAX dll is on the web server that is in my VS2008 project
2. Using the same data source
Please, any ideas