After clicking on the icon on my desktop I click on play, i then click on campaign and as it load’s it crash’s my imac, it reboots. I am using the new catalina and have been warned in advanced that ss2 will not work with future upgrades to contact the developers. I can not play any games what so ever
Same thing was happening to me, and after I went to Battle net app -> Game settings -> reset In-game options it started working again. Give that a try!
Tried this crashed. I tried to start a new mission and got past the first three then crashed again
SC2 crash also in my iMac and i’m still on MacOS HighSierra (10.13.6)