Hi, I'm having the same problem on my Mac OS High Sierra. I initially downloaded it offline, and it came up as a text file. I then tried it from the Itch app, and it said it was successfully installed, but when I hit Launch, it loaded for a split second and then went back to launch. Any advice?
The itch app probably installed it correctly, but it's a command line tool, so it makes sense that it would exit immediately. You'll have to run it from a Terminal application, as the docs say.
