ah, so photoshop
is the culprit. that's good to know. thanks everyone for your help, especially ThatDudeWithTheFood
edit:
it still doesn't work, but the problem may be the size of the file. moonshell's default splash.ani is 350KB vs. my 2.5MB, so I'm guessing that there
is a file size limitation as well. I guess I'll have to attempt something else for my animation file
also, given that there is a limitation, it's kind of a shame that the contest judges are requiring splash.ani to be present in your skin package in order to be counted as "complete" since you really don't have a lot of flexibility with such a small file size