Getting the message when I try to open SkySafari 6 Plus on my iMac running Sonoma 14.1.1. Had it open yesterday when I had to reboot my iMac for an unrelated (as far as I know) problem. After the reboot was complete I got this error and have not been able to run SkySafari since. Have deleted and reinstalled multiple times and have used terminal to run "sudo spctl --master-disable" as suggested elsewhere, all to no avail.
Fortunately it still runs on my 2011 MacBook Pro (High Sierra 10.13.6), which is where I really need it to work.