Thanks for the reports, everyone. I've been out of town for the past week or so, so I wasn't able to get to this promptly. Right now, I've replaced 2.3 with 2.2 on the first post, so it should work on Harmony (albeit with the bug that you can collide with a shooter to move on to the next level). My guess is that the crashes are due to a bankswitching issue, so I'll do some archaeology and test thoroughly on Harmony before the next release. I'll post again when I think everything is set. Thanks!