Thanks,
I've just been practicing the digital equivalent of jumping up and down on a suitcase to cram 'em in as tight as they'll go. ;) This one was tricky. I had a good base from my last entry, but as I've found when encoding sprite and map data in custom, highly-compressed form, things can get very temperamental.
Thanks for letting me know about the glitch, didn't have a lot of time for playtesting. I uploaded a fixed version. It appears I had failed to update a number from 21 to 22...