Portal 1 Compat Bug: All Materials Appearing as Missing Shader

[ErinRoseWebs69]

Describe the bug

All base-Portal 1 materials appear in Strata Hammer as the fallback Wireframe shader, implying that the shader the material uses is missing. Since this also applies to models, I don't think it has to do with DX levels.

To Reproduce

While it would show up on any map, here's the map I was working with in which this issue appeared for me.
https://drive.google.com/file/d/1NJJqDDvdqyRHlC4fVbPMIyLLUOVCX_X9/view?usp=sharing

Operating System

Windows 10

[ErinRoseWebs69]

Never mind, I had Entropy: Zero 2 mounted and it was having an issue. This is related to my issue on the Engine repo regarding compatibility with aliasing Mapbase shaders.