E.R,

>The VS IDE is crashing when I try to access the preperty editor. The application builds without errors, but when I click on a control in an aspx page (in the IDE) none of the properties show in the editor. If I try to select a control from the drop-down list at the top of the property editor VS crashes completely.
>
>This may have happened after I added some Ajax Control ToolKit controls. I removed them but am still getting the same behavior.

It sounds like your VS 2005 installation has become corrupt. I recommend running a repair/reinstall to fix the problem.

Best Regards,