"Invalid Request" with file and image upload :-(

Hi,

I've got the general editor working just fine, but I can't seem to get the file uploader to work. Here's what I've done so far:

file:///C:\Sites\baden\fckeditor\fckconfig.js
Changed to: var _FileBrowserLanguage = 'aspx'
Changed to: var _QuickUploadLanguage = 'aspx'

file:///C:\Sites\baden\fckeditor\editor\filemanager\connectors\aspx\config.ascx
Changed to: UserFilesPath = "~/user_uploaded_files/";
Unchanged: UserFilesAbsolutePath = "";

CheckAuthentication() for now simply returns true. I'll add security when I get it working.

And that's it. Nothing more, nothing less. When I try to upload an image or a doc, I get this message in a popup dialog: "Invalid Request."

When I try to use the file:
http://localhost/baden/manager/fckedito ... dtest.html
or
http://localhost/baden/manager/fckedito ... test.html#

everything works fine. The files upload just as they should. But from:

http://localhost/baden/manager/Default.aspx

I get the very unhelpful: "Invalid Request". I even moved the test files into the same directory:

http://localhost/baden/manager/test.html

And they STILL worked fine, but it's not working from my default.aspx

I'm stumped here. Is there something else I am missing? Something I did wrong? Any help would be appreciated!

Thanks,

Casey

P.S. I am using asp.net 2.0 with VB.