:( Ah bummer! I'm not sure what to do about that since my windows box isn't set up right now. It seems weird that it breaks on entering a battle--I've never run into a pure function call error before, but from what I've read it seems that would be more likely at the very beginning of the game when it initializes the generator (that's the only place I use any virtual classes). Is it always that error message? Thanks for letting me know.
I'm glad you enjoy the art though :) I had to cut so many features that by the end of the month my favorite part was the title screen.