AI causing COF to crash

Only at defult Seattle. Sorry if its been already posted, but I coulsnt find any refrences in my search.Flight sim crashes at only the defult start location when any amount of AI traffic is enabled. I'll get about - minutes worth of sim time before the crash. It will also crash if I fly in to the area (tested flight from CYXT, over an hours flight time, once in the aproximate Seattle area COF crashed to desktop)I'm using 100% stock traffic, and the problem does not happen in any of the airports I normally fly out of. It will be hard to back track files that I have installed, I rarely fly out of Seattle so I dont really know how long I've had the conflicting files/mods.