I also tried to reinstall from scratch windows 10 and re-download Ue4.26.2 and also re-downloading the automotive materials and now I have the same problem happening on the master material “M_Opaque_Master”. I can’t get my head around it… even if you try debugging it by applying the simpliest material at the material output there are still the same errors
[SM5] /Engine/Private/GpuSkinVertexFactory.ush(180,24-34): error X4503: output TEXCOORD7 used more than once
[SM5] /Engine/Private/GpuSkinVertexFactory.ush(804,3-74): warning X4000: use of potentially uninitialized variable ((unknown))
[SM5] /Engine/Private/LightMapDensityShader.usf(16,23-33): error X4503: output TEXCOORD6 used more than once
[SM5] /Engine/Private/HitProxyVertexShader.usf(27,23-33): error X4503: output TEXCOORD6 used more than once
[SM5] /Engine/Private/HitProxyPixelShader.usf(24,23-33): error X3536: Duplicated input semantics can’t change type, size, or layout (‘TEXCOORD6’).
[SM5] /Engine/Private/GpuSkinVertexFactory.ush(180,24-34): error X3536: Duplicated input semantics can’t change type, size, or layout (‘TEXCOORD0’).
[SM5] /Engine/Private/LightMapDensityShader.usf(162,23-33): error X3536: Duplicated input semantics can’t change type, size, or layout (‘TEXCOORD6’).
[SM5] /Engine/Private/GpuSkinVertexFactory.ush(180,24-34): error X4503: output TEXCOORD6 used more than once