I had the same trouble with my 360 and the Fuji pack film. The plastic film packs simply don't handle the tension the springs put on them. In the case of the 360 there's also the timer to contend with. I just repaired a dead 250 this weekend and I'm going to try a pack of Fuji to see if I can get it to work without waste or tearing sometime this week. If that doesn't work, I've been saving a few metal packs from some old stock Polaroid film that I'll use to re-load the Fuji into. :-/