AssetBundles pink skybox and trees

Hello to everyone!
I've ran into a problem with asset Bundles for Android in my Unity app.
When I lauch the scene from the asset bundle, there are no Skybox, Trees and probably somthing else I've missed right now.
In case it matters, I pack Asset Bundles with AssetBundle Browser.
Also, I have a second question: what could possibly affect a 3D model for the car to look so cartoon-ish?
Scene in editor:

Scene from assetbundle:

 

Add all the shaders used in pink appearing materials to "Always included Shaders"

Ex: Skybox/6 Sided for sky box (generally)

See if this solves the problem.Don't forget to rebuild asset bundle