Mac Editor Crash 4.20.2 at 35%

UE4 4.20.2 crashes upon editor launch at 35%. I have tried the normal fixes such as uninstalling and reinstalling, installing in a different directory, and deleting the DerivedDataCache.

I have a project from a friend using 4.20.2 and cannot launch that project directly either (sometimes that can work).

Any advice?

Running Mac Pro High Sierra 10.13.6

To add - 4.18 launches and runs perfectly fine.

4.20.2 requires mac update to High Sierra (so there is no going back there)