As of taking an update on 2022-09-10 and had this custom dll on my PC, I was not able to run RS2014; however, I did notice when I removed the custom dll, Rocksmith began to work but none of the songs from Customs Forge titles were playable. I performed the following instructions from the linked post. However,I dropped the custom dll back in the Rocksmith directory instead of using the verify button inside the manager. I think an uninstall is unnecessary, just applying beta code in steam is it: