The crashing definitely seems to be random. Played yesterday with no crashes at all, however the day before that and today I seem to be crashing whenever I press shift again. I have not changed any of my callout addons (running Code 3, MoreCallouts, StraysCallouts, CalloutsV, and I think that's it). I don't think it's an issue with any of the callout addons specifically as I played fine all day yesterday without any crashes. There's something else to it.