After following the beta for months with my first kingdom, I finally started a new kingdom and have been unlocking from the beginning.
Unfortunately, I seem to have hit a fatal bug: whenever I start a dungeon, regardless of starting race/class/preparations, I get an immediate crash and am sent back to the kingdom. I can play puzzles still, but none of the dungeons. The error is consistent, and starts like this:
System.Reflection.TargetInvocationException: Exception has been thrown by the target of an invocation. -->
System.ArgumentOutOfRangeException: Argument is out of range.
Parameter name: index
at Systems.Collections.Generic.List'1[InventoryItem].get_item(int32 index)[0x000000] in <filename unknown>:0
....
I switched back to my mostly complete kingdom and everything worked fine, so it seems to be an issue with new games. I noticed this error after this most recent update, though I was able to clear a couple dungeons before the problem started.