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Error: This copy of libswiftCore.dylib requires an OS version prior to 10.14.4 occurs while launching the iOS app using Xamarin.UITest for iOS.

Environment : MAC OS- 10.14.4 Visual studio for mac (Enterprise) - 8.0.2 (build 23) Xamarin.iOS - 12.8.0.0 Xcode - 10.2

Tried multiple workarounds mentioned in Xamarin communities, neither worked.

https://github.com/xamarin/xamarin-macios/issues/5816

Mayank Patel
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shivamsoni
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  • Can you run these commands on your Mac and paste the results? /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/bin/mtouch --version /Library/Frameworks/Xamarin.iOS.framework/Versions/Current/bin/mlaunch --listdev -vvvv – Lucas Zhang Apr 13 '19 at 01:32
  • Thanks for the response @LucasZhang-MSFT. However I received reply from Xamarin team that Xcode 10.2 is still not supported officially. Solution: Latest developer build of Xamarin.UITest (2.2.7.2002-dev) package resolves the issue. https://www.nuget.org/packages/Xamarin.UITest/2.2.7.2002-dev – shivamsoni Apr 15 '19 at 12:13

3 Answers3

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Xcode 10.2 is still not supported officially. Solution: Installing latest developer build of Xamarin.UITest (2.2.7.2002-dev) package resolves the issue. The package provides support for Xcode 10.2 nuget.org/packages/Xamarin.UITest/2.2.7.2002-dev This worked for me.

shivamsoni
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I just got exactly the same problem this morning. Visual Studio (pc) - 15.9.4 Xamarin Forms - 3.6.0.293080

For me it went away when I manually installed Xamarin.iOS 12.2.1.16 on the mac.

Andrew Bailie
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  • Unfortunately this didn't worked for me. Got fix in Xamarin.UItest latest developers build nuget.org/packages/Xamarin.UITest/2.2.7.2002-dev – shivamsoni Apr 15 '19 at 12:17
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If you install Xamarin.iOS 12.2.1.16 like explained in this comment, it will work.

Jonas Schmid
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