I noticed an inconsistency, but I'm not sure how important it is stability-wise, in the IBFD.txt in the scripts folder, a few of the Frankish armies that spawn have a "Barbarian Slinger" unit in them. The Franks don't have ownership of the unit, nor are they able to recruit it or have unit cards. I just gave them ownership and made them recruitable instead of removing them from the script file so I can keep save game compatibility. Would it cause a crash if you tried to fight a Frankish stack with that unit in it, since it doesn't have a model or texture assigned for that faction?