Cannot Edit forum settins / permissions

[Armageddonz]

Hello,

I'm having some problems to change my forum settings. When I go to vBulletin Options and select to see the whole list of options and then I edit anything, I press save and I get the message saying that my settings has beed saved, but they don't really change. Thats happening too when I try to change my usergroups setting and i can't edit anything. But when I select a single option in vBulletin options it works well.

I don't know whats the problem and would like to know if you can help me fix it. I have filled the Sensitive Data with all the information to access phpMyAdmin, my forum admin account to my FTP account and the forum's database name.

Thanks.