phpBB : Critical Error

[James]

Yeah, it's pretty bad. I come onto the board, and it usually works. Then I click on a forum, and I get the error. Reload, and I get into the forum. I click on a thread, I get the error. Reload, and I still get it. Then I finally see the thread. I try to go back to the forum, and I get the error.

Then I get the error for about a half hour until I give up, and come back a couple hours later.

And the process repeats.

Chances are I'll get the error yet again trying to post this.