[UE5.2]How to fix Interchange errors? Can't reimport textures. Nodes disappearing.

Development Programming & Scripting Blueprint
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I asked in a bunch of different channels on Discord. No one knew what I was talking about. I got blamed that I didn’t know what I was doing at least once.

This is very frustrating.

I tried the official download of UE5.2 and loaded my project. Same issues.

edit: I started a new project in 5.2. I created a new material and recreated manually the exact same graph as before. I set it on a StaticMeshComponent and added the actor in the scene. Usually, when I reload the editor, the material will lose the “Length” node. But it worked this time.

There are only four things I’ve done on top of this.

  1. Imported a texture.
  2. Used Automotive Materials assets from the store.
  3. Used a certain effects package from the store.
  4. Used content from the UIMaterialsLab tutorial.

I’ll start trying one at a time and see which one breaks the build.