I have a new install of 4.18 via Games Launcher on a Mac running Sierra 10.12.6
And Xcode 9.1.
Just opening starter files, no materials will compile, and I get the following error. Can anyone assist?
MaterialEditorStats: Error: [SM5] /tmp/47932_3870232292.metal(0): Failed to compile to bytecode locally, code: 1, output: fatal error: file ‘/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/usr/lib/clang/802.1/include/metal/metal_stdlib’ has been modified since the precompiled header ‘/tmp/metal_stdlib_11323578694557174BFFB3187C02FFDD1FE
A6808C9FF88FEA28EFmetalfe-802.1.34-mmacosx-version-min_10.12-ffast-math-std_osx-metal1.2.pch’ was built
note: please rebuild precompiled header ‘/tmp/metal_stdlib_11323578694557174BFFB3187C02FFDD1FEA6808C9FF88FEA28EFmetalfe-802.1.34-mmacosx-version-min_10.12-ffast-math-std_osx-metal1.2.pch’
1 error generated.
This error has messed with me for the past two months. It is hell. I can’t create any materials without them going grey, and most premade/imported materials turn grey as well-- in-editor and in-game. It affects everything. It’s the same in every project and in every level. I’ve downloaded older versions of UE4, and the same thing. I’m on High Sierra 10.13.1 and xcode 9.2.
(this isn’t an answer, it’s a comment, but I don’t know how to change it :'< )
Hi Everyone! the solution is installing Xcode 8.3 and thats all.
I had the same problem yesterday but i´ve been working for hours without problems. Best Regards.