Thanks for reporting this issue and providing a save game.
I was able to reproduce the crash by loading the attached savegame and letting it run for a short while in Widelands r6738. I've attached a backtrace.
Thanks for reporting this issue and providing a save game.
I was able to reproduce the crash by loading the attached savegame and letting it run for a short while in Widelands r6738. I've attached a backtrace.