I'm having a similar issue. I purchased Cherub Rock years ago and I downloaded the latest version of the "D3DX9_42.dll" file, but only the CDLC songs I downloaded over a year ago are showing up - anything I've downloaded this year doesn't appear in the "Learn a Song" list. I tried reinstalling Rocksmith 2014 remastered, opening the game with all the CDLCs moved elsewhere and then re-running the game after moving them back, but nothing appears to be working. Anyone else experience this? EDIT - Randomly reinstalled the Cherub Rock file from Steam and it seemed to fix it. Guessing the old copy of the song wasn't matching the identifier with the new CDLC.