I did a clean install of Catalina (OSX 10.15) and Mathematica 12.0 installation was flawless. However I can't install WolframScript which I greatly need.
During the installation, after typing my password, I get the follong error:
This package is incompatible with this version of macOS. The package is trying to install content to the system volume. Contact the software manufacturer for assistance.
And I'm left with only a "Quit" button to click on.
I can't find any mention of this issue on Google or here. Actually Google shows: No results found for "This package is incompatible with this version of macOS" mathematica.
Thanks in advance for any help or hint on where/what to look into !