After update can't load MP4's

[waynegfx]

I'm trying to import a song that is a MP4 file and it won't play. Is there something that has changed? I also get a backup save while trying to quit app

[HowardBrazee]

I can play .mp4 files that are already on my kJams. (2.1b70 (64 bit))

[dave]

sorry this was a borked update. downgrade to b69 to temporarily fix it, and wait for b71 to upgrade.

saving backups happens on quit, yes that's by design. give it the time it needs, i know it's slow.