Okay, it looks like an issue with chests themselves that crashes the game. Happened multiple times on different floors.
Index was outside the bounds of the array.: at HD.Scenes.ChestWindow.Update(GameTime gameTime, Chest chest, Inventory inventory)
at HD.Scenes.PlayScene.Update(GameTime gameTime)
at SlipperyBlobsDungeon.GameMain.Update(GameTime gameTime)
Both of the log files has this.
Might be the issue with chests trying to respawn stuff?