server crashing for no reason

ok so i need some help, I was adding new avatars in last night and after trying to get that to work, it kept telling me cant load ref common, i believe. I took everything i added out of the database, and now I as a gm can log in when its in check and tele and everything but as soon as i put it open, and one person logs in the gameserver crashes. I have no idea whats going on.

It's always good to have a backup before promptly change any database. If something fails, you can restore it. Always backup 2 of them. 1 is to save for 2weeks or a month while the other one is the current backup. In case the current backup contain bad data, you can always go for the 2weeks backup.