For a few days I cannot build anymore. Even a new empty Forms project (the one that displays « Welcome to Xamarin.Forms! ») displays the LaunchScreen.storyboard tab and 3 error messages:
ibtoold[8369:648873] *** Terminating app due to uncaught exception 'NSInvalidArgumentException', reason: '+[SimServiceContext serviceContextForDeveloperDir]: unrecognized selector sent to class 0x11396dc00'
It looks like this has begun after Xcode 10.0 was installed on my Mac (High Sierra 10.13.6, no pending update in the AppStore). I use Visual Studio Community 7.6.6 (build 17), no pending update in the stable channel. I cannot work anymore.
Any idea how to progress?