Unreal Engine 5.6 Crashing on Startup

Development Getting Started & Setup
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1

Every time I launch the app, it loads to 35% and then crashes. Here is the error message:

Fatal error: [File:./Runtime/Engine/Private/ShaderCompiler/ShaderCompilerEditor.cpp] [Line: 602]
5,668 errors encountered compiling global shaders for platform METAL_SM5:

I think it has something to do with loading in shaders since that’s the task that makes it crash. I have tried clearing my cache and restarting the launcher. Any advice?

2

Hi @Elijah202005,

A couple of questions for you:

  • Are you using UE 5.6 that is distributed from the Epic Games Launcher, or a source build of the engine?
  • Are you intending on shipping your project on iOS?

If you are using an EGL build of the engine and don’t care about packaging on iOS, you could disable iOS and TVOS as target platforms in the install options to see if that helps.

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Again, if you don’t plan on shipping on iOS, you may also want to try explicitly setting TargetPlatforms or SupportedTargetPlatforms in your uproject file.
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Thanks,
Hayden

3

I am opening it from the Epic Games launcher on an iMac. Should I try launching a source build of the engine instead?

1 Like
4

Figured it out. I just had to update Xcode.