I recently reinstalled this game and I noticed that the CDLC is not loading past the tuner. What happens is that it shows the amps and pedals screen and the song chart itself doesn't load. I can still play the guitar and see soundwaves coming out of the amps but thats it. This is only happening with CDLC songs.
I have downloaded the D3Dx9_42.dll file from 2014. The thing is though, it was working beforehand so I have no idea why its doing it now.