ShaderCompileWorker failed: Mismatched shader version

Development Getting Started & Setup
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1

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

2

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

3

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 :slight_smile:

4

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

5

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.

6

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

7

Another walk around is to open the project with a newer version of the Engine.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

8

How to compile with Lightmass Importance Volume?