MoopleDev - Invalid Pointer [GM = 0, JOB = 910]

Hello, Every time I log in and double click on a channel the game crashed and shows a invalid pointer error. This only happens when my job is 910 and my gm level is 0. I was wondering if anyone knew how to fix this? No spoon feeding or anything I just wanna know a general idea. I looked into MapleJob, MapleCharacter, PlayerLoggedInHandler and other places but I haven't found anything. Thank you.

uh check is Ranking in mySQL

gm dont have rank at all set it to -1 or just removed it from the source..

Thanks, I changed my ranking in MySQL to -1 and I was able to log in successfully. Is there any way to fix this without having to change it in MySQL or removing the ranks?