I've just updated to latest XCode Version 7.1.1 (7B1005) and Unity 5.2.3f1 and my project cannot be built anymore. I'm building for simulator so I selected "Simulator SDK" in Unity build settings. "Device SDK" works fine, but I need to test it on simulators. The error is: ld: in /Users/alex/Desktop/Ka226_18-11-2015/ka226/Libraries/libiPhone-lib.a(GeoRingBuffer.o), building for iOS simulator, but linking in object file built for OSX, for architecture x86_64 clang: error: linker command failed with exit code 1 (use -v to see invocation) I've tried googling some solutions but nothing helps. Also I'm not using any plugins, just plain unity project. Who knows how to solve the problem?