Welcome to the forum @pthompson1 .
Do you maybe have HALion Sonic 7 installed?
There is a known issue with it and a workaround described in this thread.
If you don’t have HALion Sonic 7 installed, please reboot your machine, start Dorico until the hub window appears and then do from the menu Help > Create Diagnostics Report. The corresponding zip file please post here. Thanks