Thanks David. When I launch the version you provided via the above link, nothing at all happens. I never see the standard JA startup dialog and if I look at the MacOS force quit options, JA does not show up as a running task. The only thing that does happen is the JA icon will appear on the MacOS task bar at the bottom of the screen. Screen image attached.
Not sure if these messages from the System log are of any help?
Apr 18 07:40:58 RobsiMac-2 com.apple.xpc.launchd[1] (com.apple.xpc.launchd.oneshot.0x1000002e.jAlbum
33398): Service exited with abnormal code: 30
Apr 18 07:41:40 RobsiMac-2 com.apple.xpc.launchd[1] (net.jalbum.17184
33411): Service exited with abnormal code: 30
Apr 18 07:42:21 RobsiMac-2 com.apple.xpc.launchd[1] (net.jalbum.17184
33421): Service exited with abnormal code: 30
Apr 18 07:46:33 RobsiMac-2 com.apple.xpc.launchd[1] (com.apple.xpc.launchd.oneshot.0x10000030.jAlbum
33564): Service exited with abnormal code: 30
Apr 18 07:51:17 RobsiMac-2 com.apple.xpc.launchd[1] (net.jalbum.17264
33617): Service exited with abnormal code: 30
Apr 18 07:52:04 RobsiMac-2 com.apple.xpc.launchd[1] (net.jalbum.17264
33625): Service exited with abnormal code: 30
Apr 18 08:00:10 RobsiMac-2 com.apple.xpc.launchd[1] (net.jalbum.17264
33735): Service exited with abnormal code: 30
Apr 18 08:01:21 RobsiMac-2 com.apple.xpc.launchd[1] (net.jalbum.17264
33767): Service exited with abnormal code: 30
Rob