No chance to start fontbase again. Reinstalled but no changes. Error in screenshot.
- Win 11
- 10.0.26100
- 2.24.9
- after reboot
Hello Florian, thank you for your post and welcome back 
Have you perhaps already tried resetting app settings as per the guide https://fontba.se/learn/reset-settings and seeing if that would remedy the issue?
Thank you again,