Was the selectable level Dungeon, Open Forest or Shop? The one that always gave problems was the Open Forest because of the world partitioning loading level chunks too slowly. The open forest is a huge level, so it places the player start in a random location then adds walls, exit, enemies and bushes in that play area, but if the level chunks haven't loaded in yet, it would crash it. That's my best guess...
If it is the Open Forest, I might need to add a bit of a delay until the chunks have loaded first for slower machines. I get a similar thing in-editor when testing on the worldmap going in to Open Forest. I assumed it was a quirk in the editor, as it never showed up for me in the packaged game, but in retrospect it's looking likely that in the editor is more representative of a slower machine. So in theory, if I can fix this so it works in the editor, it should work for you once compiled again.
I'll have a look into that, and sorry it didn't work.