I get this error code reported by the remote server:
"Fetch thread 50: Failed fetch of URL: http://<my ip>/<path> [click on link for full URL] Failed fetch with code: 401 (Unauthorized)"
Now when I click on the bad fetch URL, it opens fine in firefox. This was the same error i used to have on my last hosting provider before i go a dedicated IP.
I can give you the real URL in "http://<my ip>/<path>" in a private support ticket if you need more information (to avoid others from poking in my app)