Ok. I saved my DLC folder & D3DX9_42.dll on my desktop.
Then, I erased all remaining Rocksmith 2014 Remastered (paid version) files from its folder.
Then, I used the command steam://open/console & forced Steam to download Rocksmith version 4556485830000690187.
Then, I've put Steam Offline to prevent an update, put the DLC folder/D3DX9.dll back into the main folder, opened Rocksmith, so it would create the ini file.
I fixed the ini file & fixed the RSAsio file to make it work with my interface.
Everything works/no crash, except that my old DLCs & Custom Forge CDLCs don't even show-up in the songs list. I get a generic song list of about 30 songs
that I never bought.
I've found a link to the RSMods script, pressed the button, the songs in the old DLC folder still don't show-up at all. Even tried an old copy
of the DLC folder that I had saved years ago on an external disk. Still doesn't work.
What am I missing? I must be close...Help?