Unreal Engine does not run on MacOS 10.12.4

Development Platform & Builds
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1

Hi All

Just recently updated my Mac OS and was gonna do some course work. I launched the Unreal Engine Launcher and that opens fine. The problem is any of the engines I have installed on my Mac via the Launcher, DO NOT LOAD. They get to 35% and then die. I have sent you guys the error messages via the Unreal error return system.

Please fix and send out an update, please.

Kind Regards Dave

2

Hi Dave,

Try opening the install folder and deleting the DerivedDataCache folder. This has been known to help when Engines get caught at 35% when trying to start.

Thanks,

.

3

Hi

I’ll have a go at that and get back to you.

Kind Regards
Dave

4

Hi

I did what you said to do and it sort of worked.
I actually removed all the DerivedDataCache folders for all the installed engines, as my list below.

engine 4.10.4 - launches and works.

engine 4.12.5 - launches and sticks at 35% with my ram being eaten up and then error message → Serialization Error: Action Needed. Corrupt data found, please verify your installation. Which I had previously re-downloaded via the launcher.

engine 4.13.2 - launches and works.

So the result is working for now but I have a few questions to ask at my Uni for updating my fish project from 4.12.5 to 4.13.2 as I think we may have an issue with engine usage and Uni.

But thanks for your support.

Cheers from the UK
Dave