Song data has become unavailable!

[55Hands]

This happend to me yestereday on my PS3! All RB1, AC/DC, 20 bonuspack and all other DLC is unavailable. I can only play the RB2 songs. The DLC with scores are still in the list, RB1 songs are gone from the list.

When I try to play the DLC songs I get "The song data you were accessing has become unavailable, and the game cannot proceed without it. Your game session has restarted." before the song starts and end up at the start menu.

Do I need to re-install all the DLC and RB1 tracks? Or maybe just the RB1 transfer code? I still have 6GB of RB data on the drive. Help! :(

[55Hands]

Solved it! I just downloaded one of my DLC songs again and installed it. Whot! All the songs are back and working (it seams, haven't tested all yet, have over 300) :)

[dv8withn8]

I started getting this error today too. I'll try your solution and see if it works for me as well.