Okay, to simplify things, what I've done is create a brand new .ASPX page with the CuteEditor control on it.  That is the only thing on the webform, and there is nothing in the codebehind.  I set validaterequest="false" in the page directive.  Here is the URL:

 

 

If you go to the above URL in Internet Explorer, you should see a .NET warning inside the CuteEditor window for about one second (maybe half a second), then the warning disappears.

If you remove the querystring, everything works fine.  However, for my needs, I need to pass some encoded HTML to the webform.

Adam or anyone else using IE -- do you think you could give that a try and tell me what you see?

 

Thanks very much for your patience!

Ben