I must admit that I cannot reproduce the behaviour anymore this morning, but I always feel unwell about problems that just go away without any good reason. Similar behaviour was also observed by other developers and testers in our organisation, and I myself did test on at least three different machines, all with Monterey 12.6 and the M1 processor. But anyway, I will leave it for now. I might return if we are able to reproduce the problem more consistently. Thanks for all of your efforts!

I don't think it is important exactly how you do it. The main thing is that the application is copied, not moved. One way to do it is using Finder. You need to hold down the option key while dragging the application to the new location (I usually drag it to the desktop, but I don't think that is important). You could also do it from a terminal: cd to the build folder (e.g. ~/Library/Developer/Xcode/DerivedData/TestApp-eyuqkfhehkuyepbxeuyahjjcgmsu/Build) cp -pr TestApp.app ~/Desktop/ I usually remove the old instance of the application from the desktop first.

The problem is there again right now - again only if I copy the application, not if I move it. I am suspecting that the launch daemon for some reason can't or won't launch the application. I tried to delve into what I presume is the log file for the launch daemon, /var/log/com.apple.xpc.launchd/launchd.log. I would like to hear if the observations here can explain why the application sometimes gets stuck. Thanks again! First an example of what it looks like when the test application (here called TestApp) actually does get launched (there is a lot more about service stubs being created, but I left that out). 2022-09-29 13:31:07.270877 (gui/739/application.com.ccieurope.TestApp.26282168.26282251) <Notice>: internal event: WILL_SPAWN, code = 0 2022-09-29 13:31:07.270883 (gui/739/application.com.ccieurope.TestApp.26282168.26282251) <Notice>: service state: spawn scheduled 2022-09-29 13:31:07.270884 (gui/739/application.com.ccieurope.TestApp.26282168.26282251) <Notice>: service state: spawning 2022-09-29 13:31:07.270894 <Notice>: Coalition Cache Hit: app<application.com.ccieurope.TestApp.26282168.26282251(739)> [2930] 2022-09-29 13:31:07.270977 (gui/739/application.com.ccieurope.TestApp.26282168.26282251) <Notice>: launching: non-ipc demand 2022-09-29 13:31:07.271506 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: xpcproxy spawned with pid 6799 2022-09-29 13:31:07.271518 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: internal event: SPAWNED, code = 0 2022-09-29 13:31:07.271519 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: service state: xpcproxy 2022-09-29 13:31:07.271539 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: internal event: SOURCE_ATTACH, code = 0 2022-09-29 13:31:07.276701 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: service state: running 2022-09-29 13:31:07.276705 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: internal event: INIT, code = 0 2022-09-29 13:31:07.276706 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: job state = running 2022-09-29 13:31:07.276721 (gui/739/application.com.ccieurope.TestApp.26282168.26282251 [6799]) <Notice>: Successfully spawned TestApp[6799] because non-ipc demand 2022-09-29 13:31:07.282872 (pid/6799 [TestApp]) <Notice>: uncorking exec source upfront 2022-09-29 13:31:07.282895 (pid/6799 [TestApp]) <Notice>: created 2022-09-29 13:31:07.283117 (pid/6799 [TestApp]) <Notice>: uncorking domain 2022-09-29 13:31:07.284771 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.CMValidateMovieDataReferenceService 2022-09-29 13:31:07.284811 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.ColorSyncXPCAgent 2022-09-29 13:31:07.284823 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.CoreDisplay.XPCService 2022-09-29 13:31:07.284831 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.ImageIOXPCService 2022-09-29 13:31:07.284879 (pid/6799/com.apple.MTLCompilerService) <Notice>: created the implicit endpoint upfront 2022-09-29 13:31:07.284893 (pid/6799/com.apple.MTLCompilerService) <Notice>: draining messages from com.apple.MTLCompilerService 2022-09-29 13:31:07.284901 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.PerfPowerTelemetryClientRegistrationService 2022-09-29 13:31:07.284911 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.ColorPickerImageLoader 2022-09-29 13:31:07.284919 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.LegacyExternalColorPickerService.arm64 2022-09-29 13:31:07.284926 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.LegacyExternalColorPickerService.x86_64 2022-09-29 13:31:07.284930 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.VersionsUIHelper 2022-09-29 13:31:07.284935 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.WindowSharingControlViewService 2022-09-29 13:31:07.284939 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.documentPopoverViewService 2022-09-29 13:31:07.284945 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.openAndSavePanelService 2022-09-29 13:31:07.284950 (pid/6799 [TestApp]) <Notice>: Service stub created for com.apple.appkit.xpc.sandboxedServiceRunner Now, the excerpt below is what I get when the application gets stuck. It seems that it never gets to the part where the service stubs are created: 2022-09-29 13:23:59.437276 (gui/739/application.com.ccieurope.TestApp.26282648.26282653) <Notice>: service state: spawn scheduled 2022-09-29 13:23:59.437277 (gui/739/application.com.ccieurope.TestApp.26282648.26282653) <Notice>: service state: spawning 2022-09-29 13:23:59.437287 <Notice>: Coalition Cache Hit: app<application.com.ccieurope.TestApp.26282648.26282653(739)> [2964] 2022-09-29 13:23:59.437353 (gui/739/application.com.ccieurope.TestApp.26282648.26282653) <Notice>: launching: non-ipc demand 2022-09-29 13:23:59.437785 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: xpcproxy spawned with pid 6685 2022-09-29 13:23:59.437798 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: internal event: SPAWNED, code = 0 2022-09-29 13:23:59.437799 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: service state: xpcproxy 2022-09-29 13:23:59.437812 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: internal event: SOURCE_ATTACH, code = 0 2022-09-29 13:23:59.442645 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: service state: running 2022-09-29 13:23:59.442652 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: internal event: INIT, code = 0 2022-09-29 13:23:59.442654 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: job state = running 2022-09-29 13:23:59.442665 (gui/739/application.com.ccieurope.TestApp.26282648.26282653 [6685]) <Notice>: Successfully spawned TestApp[6685] because non-ipc demand