User Profile

Greetings all, I am running Monterey Version 12.0 Beta (21A5284e) on a 2017 MBP. I have been trying to run Time Machine and seem always to get the following message: "The file “%@” could not be backed up." I have tried running on different drives, one of 4TB and the other 6TB from Seagate. Both drives seem to work fine as general storage. Has anyone else seen this behavior?