Not really a bug, but I wanted to import someone else's level but it says "Level Number Too High", what does this mean?
Ah thanks for asking, so "Level Number Too High" means you haven't unlocked the level that they have made the beat for yet.
If you play through the first 2 levels you should be able to play anything someone has made in the demo version. (finishing level 2 unlocks level 3 - the last demo level)
Does that make sense?