Moved website - Flexiaccess in ACP goes to dead page...

Strangest thing, never seen this before. So we moved a clients site to a new hosting provider.

Now when in the Admin Control Panel and you click on the Flexiaccess menu link, it takes you to a page that can't load. In IE it acts like you aren't connected to the internet.

What would cause this?

Plugins are in the right order, checked that like 5 times.

try to clean cache and expired cache ?

Yea did that too.

I just tested the site on our old hosting and it works fine - with Rackspace Cloud Sites (who we host all our sites with).

Yet when you move the site to NetworkSolutions, everything works fine... except when you try to go into FlexiAcess - you get a page in IE that looks like you aren't connected to the internet. It's really strange.


So could it be a htaccess file somewhere doing this or maybe their hosting environment?

maybe a php problem ?
php 5.3 or php 4 ?

PHP Version: 5.2.13
Web Server: Apache/2.2.14 (Unix) FrontPage/5.0.2.2635