Right, about the source. It's exactly what I said earlier, with one exception, this time, Defiant is stopping his work on BC, so he gave out the source for it.
Previously, it was accessable, but he didn't include it so users couldn't accidently burn themselves.
As for the second issue.
The crashing could be due to a faulty torpedo setting (as in, missing torpedo script). And about the stars and nebula, could it be that a ship with blinkers had entered the set?
Or is it also when you fire phasers?