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ShaderCompileWorker failed: Mismatched shader version

Hello, Everytime I open Unreal Engine4 project or just it's browser, message with:

ShaderCompileWorker failed: Mismatched shader version for format SF_VULKAN_SM4; did you forget to build ShaderCompilerWorker?

I did not do anything with UE4 files of project or engine, I just took a break, updated engine and came back (updated 4.21 to 4.21, same version, just some mini-update) but it shows this, I can work with-in editor but when I click on OK, it will shut down.

Glad for any help.

Edit: It was not happening before today's update. 04/12/2018

Product Version: UE 4.21
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asked Dec 04 '18 at 10:01 PM in Using UE4

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avatar image TheSubZer0 Dec 04 '18 at 10:06 PM

If you have Lightmass Importance Volume in your level, try to disable this or delete, then try again...

avatar image Desttik Dec 04 '18 at 10:13 PM

No, there is nothing like this and it's not caused by level, because It appears also if I just run the UE4 browser of projects, not any project and when I'm actually opening any project, the crash window will appear at 86%, also I have empty levels (it's a mobile app) so anything related to the project is not possible.. But thanks for help anyway :)

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3 answers: sort voted first

I had the exact same mistake I decided by removing and installing the engine again through the epic game launcher

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answered Dec 07 '18 at 07:38 PM

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avatar image Desttik Dec 07 '18 at 10:10 PM

Thank you, at least somebody answered, although I have it already solved, just "verifying" the UE4 version was enough (UE4 problem), but sad that I got help from UE4 group on facebook but not here at their own helping forum.

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Thank you, Desttik. I am having exactly the same issue, after that update. And a crash at 86%.

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answered Jan 11 '19 at 04:44 PM

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Another walk around is to open the project with a newer version of the Engine. Works for me first attempt.

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answered Feb 27 '19 at 04:18 PM

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