The game is able to load:
- Rock Band
- Rock Band 2
- Rock Band 3 Downloadable Content
- Rock Band Downloadable content (from discs)
The game is not able to load:
- Green Day: Rock Band
- LEGO Rock Band
- Rock Band Downloadable Content (not from a disc)
The ones that are NOT able to load ARE able to be loaded by my brother's account, who was active when the songs were purchased and downloaded. This isn't consistent though, since I can still play a number of other imported titled.
Is there a way to fix this, since my brother can't really buy all of those songs again?