Thanks. I tried the updated version and it works better but still has some problems. When I downloaded it, it complained that it was missing the .pck file. Because I had downloaded the windows version previously, I knew that the .pck file was found there, so I extracted that into the same directory. Then when I ran it, it said that the .pck file had to have the same name as the executable (without the extension) so I renamed it to match. Then it was able to launch, but it crashed because it required a newer OpenGL version than I had on my machine.
So anyway, if you fix it so that the Linux version is a tarball or zip that contains the correctly-named appimage along with the .pck file, then it will probably work on other peoples’ machines if they have a newer graphics card than I do.