DaVinci Crashing at title preview, fonts not showing up

Hi everyone
I'm experiencing two big problems in DaVinci Resolve Studio 17.1 (Mac App Store version) on macOS Big Sur 11.2.3 an a MacBook Pro (15-inch, 2018 – 2.2 GHz 6-Core Intel Core i7 - 16 GB 2400 MHz DDR4 - Radeon Pro 555X 4 GB):
1) When I try to preview a title (hover on title), DaVinci crashes immediately.
2) The company font we're using is not showing up correctly. I can only choose the «Light» but not «Regular» font style.
Edit:
3) When I click on the settings tab of the «Text+» effect, DRS crashes immediately, too. See Crash Log File 2.
Does anyone have a hint for me on what to do?
Logs are attached.
Kind regards
Michael
I'm experiencing two big problems in DaVinci Resolve Studio 17.1 (Mac App Store version) on macOS Big Sur 11.2.3 an a MacBook Pro (15-inch, 2018 – 2.2 GHz 6-Core Intel Core i7 - 16 GB 2400 MHz DDR4 - Radeon Pro 555X 4 GB):
1) When I try to preview a title (hover on title), DaVinci crashes immediately.
2) The company font we're using is not showing up correctly. I can only choose the «Light» but not «Regular» font style.
Edit:
3) When I click on the settings tab of the «Text+» effect, DRS crashes immediately, too. See Crash Log File 2.
Does anyone have a hint for me on what to do?
Logs are attached.
Kind regards
Michael