Studio 2019 freezes when opening a new package.

Hello. Each time I try to open a package, Studio 2019 freezes. I restarted my computer, repaired the program from Control Panel, updated to the latest version, and tried re-installing Studio. I'm still getting the same problem. :( Is there anything else I can try?
I'm using a MacBook Air and running a virtual PC through Parallels. I installed the new Apple security update last night, and Studio was running well before the update.