[Mobhack]

I haven't had the time to look into the code, but for now my advice is that if offered a river crossing type battle for the next fight in a long campaign, exit out of the process (without bothering to fix or rebuild etc - you get your first opportunity to exit at the buy support troops point of setting up the new battle IIRC) and go back to the last save and restart that. (I always save just before hitting 'end turn' so I have a point to go to if things blow up).

Andy