Battle-load/-play crashes have been known to occur when Trolls (both kinds) are involved in battles. We've checked everything we can think of and cannot track down this seemingly random issue. It tends to trigger more often when there are more trolls in play.
Could I ask players to do three things:
1. Load up a custom battle where one side is Adunabar and use all your money to recruit hill-trolls.
2. Run the battle and report any error and when it occurred
3. Let us know you system specs and game settings.
Thank you.