I don't use fsxpauls Mod. I have only done a couple of changes in the aircraft.cfg which stop it performing like a rocket ship. For all I know, I might have reduced the power too much.

The PDCS often causes FSX to CTD, UNLESS the entries are done slowly and deliberately, but even that does not guarantee that you won't get a CTD. :(

Captain Sim will do an update for the 737. We just don't know when. :-X ;D