Cannot edit style or collapse in admin

[marcopolo]

Very strange problem I've got and I'm stuck, added the post over at vB but I know they are some very clued up people here.

Here the thread I started over at vb.com http://www.vbulletin.com/forum/showthread.php?t=315341

This is basically a new install that I've added a style to (albiet different version and works fine on another server test), only changed forum permissions and how people can register. I also can't select styles from the homepage.

No I cannot collapse/expand option in the admin tree (have to force expand all). Cannot select any of the templates in the styles to edit, cannot delete them either.

I can access all the expanded and change settings.

Any help would be appreciated.