Sighthound won't launch on my Mac either. Brand new iMac running 10.13.2. I tried Sighthound versions 5.1.5, 5.1.4, and 5.1. You can click the app icon and it asks about submitting a bug report, but no matter what you click yes or no that's as far as it goes. It never opens. I tried restarting the c...