Until a few days ago, my app was running fine. Recently I've created a new build from XCode 9.2 and am getting the following error from Simulator System log:assertion failed: 17C88 15C107: libxpc.dylib + 72226 [EE650BC3-0539-32F0-9205-ECF6755E856F]: 0x7dMy app is stuck at starting screen, showing loader icon and times out.This also happens on my phone and a friends phone.I've tried an older version of the app on my phone in TestFlight, that still works.I've tried folowing advice from link below, deleting the simulator and re-adding it, that doesn't help. https://bugzilla.xamarin.com/show_bug.cgi?id=61072Anybody any idea what might cause this? I'm completely in the dark, googling hasn't helped so far.Cheers, Pim