Hi Christer
- You may first run cleaner tool to uninstall Creative Cloud Desktop app
https://helpx.adobe.com/creative-cloud/kb/cc-cleaner-tool-installation-problems.html
- After uninstalling creative cloud rename coresync to coresync.old
/Library/Application Support/Adobe/CoreSync
- Reinstall creative cloud through-
https://creative.adobe.com/products/creative-cloud
let us know if this will help.
Regards,
Akanchha