Automotive materials crashes after adding to skeletal mesh - UE4.26.1

Development World Creation
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I have very weird problem. After adding any automotive material (free materials pack) to any skeletal mesh in UE4.26.1, I get errors and material can’t compile anymore. No matter how and what kind of skeletal mesh I add (It can be very simple model - 2 cubes+1bone or just simple box imported as skeletal mesh) the result is always the same. In Ue4.25.4 , everything works very well.

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Continue…

Another way to fix this error is to enable with check the last item in each Material Instance: “USE OBJECTS UVS” .
But ou need to do this in all wrong material instance, because of assign the master material to seletal mesh.
I hope this can help you.

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Dear Lukas. I have this same issue and to solve it, i get the new demo CarConfigurator. There are two new material for working with Skeletal Meshes: Textile and Opaque.
If you used the version of this shades came with Automotive Material when you assign any material instance of this in a skeletal mesh, your material will get error and to not show.
Sorry the english. Bye

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I have the same problem.
in one scene I have a rebuilt engine then a skeletal mesh. as soon as I assign an automotive material it goes into error and ruins all the instances that refer to that master material. who was a master opaque. to solve the error I had to remove the instances from the engine and physically go to the master material folder to replace the corrupt file. then I restarted Unreal and everything went back to normal. There is a solution? as they did in the demo since the machine was riggata and so I imagine a skeletal mesh?

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automotive [master] materials are broken as far as I can see in 4.26.

tried fixing with turning off M_Opaque_Masters Usage with Skeletal Meshes [mine are applied to statc meshes] but it keeps reverting. made a copy of this master and used that as parent for my instanced materials although that too is now doing the same thing…

thing i read somewhere this is resolved in 4.27 but would be nice that it worked in this stable release.

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Hey, interested in this fix…
what was the corrupt file you replace? are we talking the M_Opaque_master asset?

thanks for any insights as i have this issue. no sooner i try to turn off the Use with skeletal mesh flag in the material as soon as i save/apply it turns back on, in both the original and my copy of it.

Thanks

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my fix for this was> create a new map and place a primitive in the scene. before applying a material from the pack to the primitive I went to the M_Opaque_master and removed the flag for ‘Use with Skeletal Mesh’ under Usage of this material. saved/applied the material and then added a instance of the automotive pack to the primitive.

then i returned to my main level where it was broken and the instances applied on my geo now worked [although you might need to toggle of either the is metal., use object uvs, or anisotropy to get it to recalculate and display the correct material.