Update to #100253
https://thebrain.zendesk.com/agent/tickets/100253
Hello Neil,
Thank you for your patience.
The team reviewed it and found the remaining startup case. This is a very unusual local account state, and a fix is now coming in version 15.0.544.
Once 15.0.544 is available, please update to that build and try launching TheBrain 15 again from within the app.
(If you'd like a direct download, this link should be available when ready after a couple of days when the build is out: https://thebrain.com/download-mac-update?v=15.0.544)
For now, please continue using the Web Client as the temporary workaround:
Best regards,
John