Can’t add categories or change anything within the admin

[vandiermen]

I first helped the developer of http://www.grandeverge.com/store/ with a few things 2 months ago; it was all working fine; but now nothing can be changed or added in the admin.

What happens is when you try to add or change anything; when you hit the submit button it just goes to the admin homepage.

Since then the user has changed the admin folder to something like 45645 but this seems fine and I put it back with the defaults and it still happens.

I have checked the database user permissions and they seem fine; I have re added the database user and did not change anything. Wondering if anyone has heard of this before or knows how I can isolate the problem.

[kuroi]

This sounds as though the recent security patch may have been only partially applied. Check that the old admin/includes/functions/html_output.php was properly replaced with the patched version.