Using MacOS 10.15. Before anyone asks why I'm playing this on a Mac, I have nothing else. Thanks in advance.

I can help you! first open terminal keep that open then move the where the Carlson app is right click then show package contents , contents , macOS , then go back to terminal then type this "chmod +x" then space go back to where it has the white page called kalson drag that to terminal click enter then try  Carlson 

btw after you type x click space hope this helps :3

it should look like this  

hope it helps :3

Thanks! This works.