A bit more information.

With the new file from Terry.

I get the following javascript errors all apparently in CuteEditor.htc.aspx

Line 1131, Char 1 - Syntax Error

Line 6480, Char 2 - Object Expected

Line 6710, Char 2 - Object Expected

And much more frequent hanging  with hourglass.

With the original file, no hanging and the same access denied error as above.

Hope that helps.

James