OK, someone loaded a save game in this thread: http://www.twcenter.net/forums/showthread.php?t=386942
It's for RTW exe and I get the CTD.
Prior to bribing the general I moved a spy next to look at the Retinue/Traits:
I then loaded up the game and wondered if the character 'Decimus Naevius Capella' already existed in the list of generals - they don't.
However, there are already two people with the same name: Decimus Fabius Maximus). One is the faction leader and the other is a general/governor in Lilybaeum.
When there has been a sucessful bribe I think the faction leader can aquire some additional Retinue/Traits? If this is the case then I would presume that is the reason for the CTD?
Edited: I just realized that the duplicate is not the FL......