I did a clean install of Catalina (OSX 10.15) and the Mathematica 12.0 installation was bug free. However, I can not install WolframScript, which I really need.
During the installation I get the following error after entering my password:
This package is not compatible with this version of macOS.
The package tries to install content on the system volume. Contact the software manufacturer for assistance.
And I just have a "Quit" button to click.
I can not mention this problem on Google or here. Actually, Google shows: No results found for "This package is not compatible with this version of macOS" found mathematica.
Thanks in advance for any help or an indication of where / what to look for!