Materials missing in viewport [4.26]

[eco_bach2]

When I open a 4.25 project with latest 4.26 Preview 7 my materials go missing in the viewport.
Yet if I inspect the actual materials in the instance editor I can see all the Texture Maps.

The error I see is

[SMS]
/Engine/Private/Tesselation.ush(178.3-12):
error x3004: undeclared identifier
Tangent0_U

What gives?
How do I get my materials to show up?

Am using Megascan textures and materials.

[ooghe]

I’m very curious about this, I’m also getting the same error to with 4.26 Preview 7. If I manage to fix this, I’ll update.

[ooghe]

OK, I found “Try uncheck “Crack Free Displacement” is a bug in UE 4.26 preview 7” and that worked!

[DanH71]

could you give a little more info please? as experiencing the same thing…

where are we unchecking ‘crack free displacement’?

thanks

[DanH71]

[ooghe]

yes, exactly