Another bug: In Battery Check Mode, if you save a level, then minimise MLLE, then start BC up, then exit BC, open up MLLE, then right click and click Set Event, open Events, and all the sections will become options(Like Events). Select any of them, and an error message comes up. The only way to fix this that I can find is to restart MLLE, but it'll happen again once you do this again. This is unfortunate because the above steps are currently the only way of testing levels, as "Save & Run" or "Trial Run" both cause "Unable to find Data.j2d" messages.