The last two versions of Tor Browser that I have tried on Mac OS are still OK for the admin account but when I try to launch in my normal user account, I get
Tor Browser does not have permission to access the profile.
Please adjust your file system permissions and try again.
Thinking it could be related to my adding a line to torrc, I chmod that to 777 but it didn't help. I ran fs_usage(1) to try to figure out what files it was hitting, but there are zillions of output lines per millisecond. I did see that it was hitting files in ..../TorBrowser.app/TorBrowser/Data/Browser/profile* so I changed the group on all of those. Still doesn't work (and none of the files I just changed group on have ever been touched by me before).
Knowing that the Tor Browser is derived from FireFox, I deleted the app completely, along with a file elsewhere that had "torproject" as part of its filename, and deleted my entire ~/Library/Application Support/Firefox directory (which contains the FireFox profile). Installed a freshly downloaded copy of the Tor Browser and tried again. Same error.
So I'm puzzled....