Particle system not displaying selected material. Help?

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My particle system (using mesh data) is appearing with the rings with no material on the left, instead of spawning rings with the material selected on the right. Overriding the material in the Required Module or changing the material in the mesh itself doesn’t seem to change the outcome. Some materials are working while others aren’t. Any tips?

Just a guess- perhaps ‘Used with Mesh Particles’ isn’t checked in the material?

It actually was checked. I ended up resolving the issue by opening and closing the editor a few times :expressionless: