There are certain FPI commands that should not be used in a weapon script. Can you post the weapon script here for me to look at?
On the side, though, I've heard other users have had problems with their weapon scripts. It could very well be a bug in PB that needs fixing. But for the sake of completion, I'd like to look at your script, just to see if there might be something wrong with it.
The one and only,
Only those who sow the seeds of their desires will reap their benefits later.
However, I have seeds of my own to tend to. I don't have time to be someone else's watering can.