It may be worth mentioning too, that the vanilla loader also throws up an error for me but only after travelling a lot, it's always an out of memory error on java (I have about 1.2gb free ram to play) and I've taken to logging out every 30 mins when the game begins to lag. If I wait for the crash java almost locks up my machine with full ram usage (vanilla) and I have to task manager to end process. I really want to try this, and partly so I can add the lower resolution tileset.