If you see the error message "File corruption detected in Documents folder" in BIAS FX 2, please try the steps below:
1. Disable iCloud for Documents & Desktop sync, please refer to the link here. If iCloud is disabled all the time on your Mac, please skip #2 and go to #3 directly.
2. After disabling iCloud, make sure there is a local (default) Documents folder generated on your Mac. If you can not find Documents in Finder, please follow the steps below:
1. Disable OneDrive or other cloud sync services for Documents.
2. Make sure the Documents folder is not a protected folder on your Windows 10 computers.