Final Cut 11.1.1 freezes after MacOs 15.5 Update

I updated to 15.5 a couple of days ago. Since then Final Cut 11.1.1 isn't working anymore. I uninstalled and installed it again, no change. It opens, but when I click anything the beachball comes up and nothing is happening anymore. I tried it with the library on the local ssd and on an external ssd, no difference.

Before the update to 15.5 everything was fine. I didn't change anything else. I reset the preferences already, didn't help.

I would appreciate any help... Thanks you!