OfficerFive0

Ok, so there's several different issues here. First would be the exporting issue. When working with a model in zmod, it should be named model_hi. (Replace model with this model name). When you export, export as model_hi, then model. That way, the model_hi will only contain the L0, and model will contain all the other lods. But besides that, the model in in zmod must match what you're exporting it as. So in your case, it would be police6_hi, and you would export it as police6_hi and police6. Regarding the shader error, somewhere on your model, there is something that is using the default material, so you do need to select by material. But when you do so, be sure to be in polygon mode.

I dont think its possible on peds.

After testing it out, dirt in fact does not appear on the reflective parts. if you use decal2 instead of decal, then i believe dirt would work, but the livery wont be as reflective

ill have to test that out, i never actually verified if the dirt did or didnt work.

does the dirt show in zmod, you may need to copy the mapping

NaturalVision, it causes it. the author stated on the mod page that it was either good looking lights, or good looking sunset (something along those words).