Dec 28, 2009 03:41 PM|ssohl|LINK
We are using CollasiblePanelExtender Ajax control. When opening and closing panel it makes a call to server and puts a value in Session. After about the second click we see this error "AjaxControlToolkit.ControlBase.onsubmitCollection.length
is null or not an object."........also error appears spradically when updating.........users say they can update data a field box at a time and then hit update button with no error.........
Also this only happens on our Prod box and no other environment.....Its a Intranet site with a small user base of 50-100 users.......
Any help with direction of how to troubleshoot this problem would be appreciated.