I have this problem here Actually i don't have it,but one of my users do.How can i fix it.I think the problem appeared when i install the kingdoms mod but i am not sure.
I went back and read that thread, and seriously dont remember posting any of those posts. Seriously. What the hell. I DONT REMEMBER ANY OF IT!
Anyway, as follymaster said, there is nothing wrong with the database, there is something wrong with the code.
Try checking the code around any "_exp" lines and see what is going on. Somewhere it is checking for the experience in the databse, but there is no level next to the _exp column. Jamin said in the other thread it needs something like 1_exp 2_exp, if nothing is set it comes out as just _exp