Okay I'm fuming at the moment so I will bulletpoint my problem. .Playing Rocksmith. Everything was fine. .Installed another CDLC song (Demon Hunter) and I got the bug where i can't do anything past tuning. .Tried the "fix", replaced the .dll file, restarted my pc. .Rocksmith would then not launch at all second I clicked it I got a black screen and it crashes .Completely reinstalled Rocksmith again. .Tried installing CDLC and doing the patch again. SAME THING HAPPENS .One sad guitarist :( Can anyone please help me... I was hoping to play all day today.