@JD - try disabling the 34 additional ships mod and enabling the older GWX campaign with VonDos' ships mod (also available on my FF page). If the VonDos' ship mod works then it narrows down the number of problems that may be causing it.
I'll also need to ask the usual question - where and when did the problem happen? This should allow me to replicate the problem and get to the bottom of it. I've done a load of testing but something may have slipped through the net
. I'd like to say that this is a first but...
If someone else suffers a CTD I'll withdraw the mod and rebuild it from scratch. I'm happy that the VonDos' mod is good as I've had just short of 200 downloads with no problems reported.