Unfortunately, I can't provide you with the link since it's a password protected site.

Also, there's not much more information that I can provide you regarding the error message.  When the page containing the Editor loads, the editor screen appears completely blank, with no tool bars or anything, and an indicator of a JavaScript error appears in the status bar.  Double-clicking this indicator brings up JavaScript error dialog box.  It says:

Line: 4
Char: 17891
Error: Access is denied.
Code: 0
URL: [URL to the page]

No errors or events are recorded in the Event Logs.