So I’m all set up and have played a number of songs on Rock Band 3 thanks to this wonderful site. Problem is now when I try to add new songs (a couple hundred in or so), either through Buffalo or Horizon, the songs don’t “stick” on the USB. I’ll add them, see them on the list, then go out of the software. When I head back in, the songs are gone.

I looked for a similar post but the solution was to use Horizon.. which worked for a bit. I was about to add about 35 more songs that worked, but now I’m having the same issue. Any help would be much appreciated!