In my experience, it takes me three separate computers to create CDLC on Mac... Yes you read that correctly, three. I play rocksmith on my Macbook running the latest Catalina, and have always had trouble trying to run the custom toolkit or EOF. Instead, I use an old Mac Mini running Mojave to make CDLCs and it does so just fine. However while I'm able to create CDLC's without any problems, where I hit a roadblock is with Wwise, as it's next to impossible to find the correct version to work for Mac. I then usually put the CDLC's on a flash drive and load them into Wwise (2013) on this horrible HP laptop/tablet thing I got for free. It's good enough to run Wwise, but not good enough to even load Rocksmith unfortunately. After running the CDLC's through that piece of shit, I load them into rocksmith on my Macbook. So to recap: Mac Mini (Mojave): Create CDLC via EOF HP 360: Wwise2013 Mac Mini (Mojave): Rocksmith Song Creator Macbook Pro (Catalina): Play the game... I'd like to think there's an easier way to create CDLC's on Mac, and there probably is... but it's proven difficult for me. At this point, I'm probably just gonna buy a PC just for gaming anyway. However, I'm happy to process CDLC's in Wwise for anyone Mac users who've at least gotten far enough to create them in EOF :)