I opened Logos, accepted the updates and when I restarted the application, it doesn't start, Nothing happens,
I think you have OSX 10.10. See my earlier reply about this.
Hi Dave. I have MacOS High Sierra 10.13.2
Hello Pedro!
Please delete the shortcut for the app from the macOS doc and try opening from the applications folder. If that works, then add the shortcut back. If not, please download and install the newest version of the application engine (see "install" link in my signature line). Please let us know how it goes.
This has been fixed in 7.13.