Portions of Model not Visible After Writing from Unity

[cxg2827]

My model had several items joined together to form the "Cylinder" in the blender Outliner. After creating the model from unity, and loading the part in the game, only the main body and the windows are visible. The airlock and cylindrical parts do not show. Any ideas?

Previously I've had all those parts unjoined, and in Unity I added mesh colliders to each object. It came in fine when loaded into KSP.

But, I joined them to make the UV easier to organize, and now I have this issue.

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[CaptainKipard]

Are you using the latest Unity? I think there are problems with it.

[cxg2827]

Yea, I'm using the latest. I'll downgrade it and give it a go.

Thanks.

[Dispatcher]

Also, perhaps flipping normals might help?

[xEvilReeperx]

Do you have multiple materials assigned to the (from your unity screenshot) "Airlock" and "AirlockHandles" parts? PartTools doesn't like that. One material per submesh or the exporter will choke and affected portions of your model won't be exported

[PolecatEZ]

You need to make sure Blender is using the same texture instance throughout the mesh.

Blender likes to make a million copies of a texture for whatever reason, and assigns them numbers. You'll see it when you scroll down the UV list of textures. You need to make sure every piece of the mesh is using the same "number" of the texture. If it does that, you'll see multiple materials are needed for your mesh in Unity, and removing it will still let the object look ok in Unity, but when you get it in KSP the missing texture assignments make bits of your mesh disappear.

You need to go back to Blender and select the faces of the problem areas, checking to see if the UV texture assignment changes, then scroll to the proper texture instance (whatever the rest of the mesh is using). Then go back to Object mode and save. This should fix it.

[cxg2827]

Thanks for the replies. I'm re-doing the model completely and will keep these in mind.