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UE 4.22.0 fail to open

Hi there,

I can't launch UE 4.22.0 Editor after updating from 4.22.0 Beta to 4.22.0. Everytime I try to create or launch an existing project I receive the Datasmith alt texterror as shown in the attached image and Editor doesn't open, going back to epic game launcher.

If I try to re-build datasmith stuff, it says I need to compile my project from source manually, that's seems pretty absurd.

I've tried bot rebuilding and not rebuilding, but this doesn't change the game. I'm launching 4.22.0 with -dx12 option enabled to use raytracing.

4.22 Beta was fully functioning and didn't shown this problem. I can't reinstall datasmith because it says that it's installed on every engine.

I'm on Windows 64bit 1809 How can I fix this?

Product Version: UE 4.22
error-unreal.jpg (34.8 kB)
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asked Apr 03 '19 at 09:41 AM in Installation & Setup

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You need to update to the latest version of the Datasmith plugin. You currently have the Preview version installed.

Click on: "Plugins instalados" and choose to update Datasmith

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answered Apr 03 '19 at 12:47 PM

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Stephen Ellis ♦♦ STAFF
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avatar image RS Digital Studio Apr 06 '19 at 05:37 AM


I just came across this post as I too am getting the same issue. When I went to install datasmith, even though I no longer am actually using it, I don't get the option for v22 of the engine. See screen shot here: https://i.imgur.com/s75X9tC.png

Any suggestions or is there a way to remove it completely if you no longer use it? Thanks heaps Regards Shez

avatar image Vush_Vush Apr 09 '19 at 11:17 PM

I've solved with a clean install

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