When I try to disable a category, I am taken to a screen that prompts me to click update after saying that I will turn the category and its contained products off. However, when I click update, I get this error screen:

Forbidden

You don't have permission to access /admin/categories.php on this server.
Apache/2.0.51 (Fedora) Server at www.myurl.com Port 80

I have tried every permission I can think of on categories.php to no avail. Any ideas?

Thanks!

Christian