Yeah, I completely agree! Please provide us with new drivers for Fast Track C600 that support High Sierra, or the new audio interface that I will be forced to pay for will definitely not be an Avid product.
I have tried the following workaround that does not work for me:
http://community.m-audio.com/m-audio...os-high-sierra
1. Install the drivers from official Avid site
2. restart
3. Remove /Library/Extensions/M-AudioFastTrackC400.kext
4. Copy /System/Library/Extensions/M-AudioFastTrackC400.kext to Desktop
5. Remove /System/Library/Extensions/M-AudioFastTrackC400.kext
6. Install M-AudioFastTrackC400.kext from Desktop to ---> /Library/Extensions/ <----, use KextBeast to install (
https://www.tonymacx86.com/resources/...) or another similar app
7. Restart
If this workaround works for anybody else, please let me know.