"Enable Private Messaging" doesn't stick

[Oddish]

I'm in the process of installing a board for a client, and when testing it out, the option in the control panel "Enable Private Messaging" doesn't work. I try to check it, but when I return, it's unchecked again.

[Floris]

Is his usergroup allowed to use the private msg system, and is the privmsg system enabled through vbulletin options > ?

[Oddish]

Yes, "Private messaging enabled" is set to "Yes" in the Options, and the usergroup (Administrators in this case) has "Maximum Stored Messages" set to 50.

[Floris]

Are you using the default templates?

[Oddish]

I'm not, but I just created a new "default" style and that works perfectly. I'm confused though, as to what I might have modified to break the "Enable Private Messaging" option. I've only messed around with the design. Which template is the likely culprit?

[Oddish]

I got it! It was an included file that messed up $_POST adn $_GET variables. My bad.