Aug 09, 2008 01:44 PM|surfsista|LINK
Ok, it is working now.
Not sure exactly what was wrong but I had to do two things to make it work.
1). Install the correct versions of vs 2008 (no sp1), and .net extensions ctp (system.web.extension 126.96.36.199)
2). Had to re-install the AjaxToolKit for 3.5. I could not simply copy the dll from one machine to another, I had to download it and compile it on the new machine.