Game Crashing - Which event?

The game uses HWA.

I cant recreate it in an empty frame, but it crashed when i checked for collision between the flame trail and the plane, and also if i checked for collision between explosions and the plane. The thing about flame trails and explosions was that they were scaled and rotated and had alpha layer.

So i made a dummy object now that is also spawned with the flame trail thats invisible and never changes size or angle, and now it works. Did the same with explosions. I still don't know exactly what was the problem, but i could try and examine it further if you like