Unreal Game Engine Won't Launch

Development Platform & Builds
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1

I am trying to launch Unreal Game Engine 4.13.1 on my Mac but whenever I hit launch, it says “please wait…” for a couple of seconds, then the application disappears from view for a second or two, then it comes back right at square 1 and nothing has happened.
When I look at the Activity Monitor while this is happening, I see that the Game Launcher jumps in CPU for that couple of seconds and then just drops while UnrealCEFSubProcess(11520) pops up and then sometimes says it is not responding. I’ve already restarted my computer and nothing has happened.

I’m using a
iMac (Retina 5K, 27-inch, Late 2014)
3.5 GHz Intel Core i5
AMD Radeon R9 M290X 2048 MB
running Yosemite

2

Hi Keith Treason,

Are you downloading the Source version from GitHub or the Binary/Launcher version from the Web Site? Is this the first version of the Engine that you have tried or did you have previous version installed (ie. UE4.12)? If you have a previous version, is it still working?

Have you tried verifying your installation: Navigate to the Library, click yellow down arrow on the current Engine version and select “Verify.”

Please answer these questions and we will continue to assist you.

Thanks,

.

3

I downloaded the launch program from Unreal’s main website a couple months back. When I finally opened it, it said there was a new version available so I downloaded the actual program. I don’t have a previous version available in my library.
I hit verify and after a minute or so it asked to restart but it still does the same thing and won’t open.

4

What happens if you navigate to 4.13>Engine>Binaries>Mac>UE4Editor and double-click to open?

If there is not an app then UE4.13 did not install completely/correctly.

As a troubleshooting step, if you can open the Launcher, navigate to the library tab and choose Add Versions: Select UE4.12 (You can have multiple versions of the Engine.)

5

Hi Keith Treason,

Since we have not heard back from you in a while, we are marking this post “resolved” for tracking purposes. However, if you launching the Engine from the Launcher please respond with the requested information and we will continue to investigate.

Thanks,

.

6

I went into Engine>Binaries>Mac>UE4-EditorStyle.a and it wouldn’t open. It just says “There is no application set to open the document “UE4-EditorStyle.a”.”

How do I figure out how to install the entire app completely/correctly?

I’ve installed multiple versions of the Engine and nothing will open.