Reply to Catalyst app throws error in Big Sur beta 6 when trying to start from Xcode beta 6 I’m not sure if this applies/applied to 12.0 but I got my Catalyst app running by running it as root on Xcode 12.2 beta 2 (12B5025f). (Edit scheme, select Run action, open Info tab, select “Debug Process as: root”) App & System Services Core OS Oct ’20