This Video Did not work
Neither did this one
I Also tried a Fresh install of Rocksmith 2014 and Customs Forge Tool. That also Did not work. Please Help Me!
Now when I open Rocksmith, it will open, but, Steam sends me error messages saying to make sure Steam is running even though it is running. I can close them and open the game anyway, but I have to create a new profile with 0 progress and none of my CDLCs are present.
I have the exact same problem and cannot find a fix. I tried nearly everything I can find. Reverting to an old version did not work. Updating, and reinstalling all of the customs forge tools did not work. Running fixes through Steam Console did not work. Have you been able to find a fix yet??