Hi, I am using the following versions: Unity - 2019.4.18f1 AR Foundation - 2.1.18 ARKit Face Tracking 1.0.13 ARKit XR Plugin 2.1.18 Mars 1.3. All that I am using is mainly coming from these packages. Apart I have added an SDK for Shopify (new version and compatible with 2019.x). Everything works fine in separate Projects - but when combining these functions all together in one project, the following problem occurs. Within Unity everything works fine, but when trying to deploy to iOS Device the following error occurs: ld: warning: arm64 function not 4-byte aligned: _unwind_tester from /Users/XXXX/Documents/#XXXX/Unity_Projects/XXXX/Builds/Build5/Libraries/libiPhone-lib.a(unwind_test_arm64.o) duplicate symbol 'malloc_allocator::deallocate(void*)' in: /Users/XXXX/Documents/#XXXX/Unity_Projects/XXXX/Builds/Build5/Libraries/com.unity.xr.arkit-face-tracking/Runtime/iOS/libUnityARKitFaceTracking.a(malloc_allocator.o) /Users/XXXX/Documents/#XXXX/Unity_Projects/XXXX/Builds/Build5/Libraries/com.unity.xr.arkit/Runtime/iOS/UnityARKit.a(malloc_allocator.o) It seems that there is an issue with the face tracking package. Just for finding out, I have removed the face tracking package and I was able to install it to the iOS device without problems... But I need the face Tracking for my app :-( therefore I am looking for help on this! Thanks!!