save sig error
 

When I try and add a sig on my admin log in. I click save signature and get this error. any ideas? This is on my test forum before I go live with it.

Forbidden

You don't have permission to access /testvb/forums/profile.php on this server.
Additionally, a 404 Not Found error was encountered while trying to use an ErrorDocument to handle the request.
Apache/2.2.11 (Unix) mod_ssl/2.2.11 OpenSSL/0.9.8i DAV/2 mod_auth_passthrough/2.1 mod_bwlimited/1.4 FrontPage/5.0.2.2635 Server at www.mywebsite.com Port 80