Load Scene from Asset Bundle

Hello
I am trying to load scene from asset bundle, i have added different skybox material in that scene. In that scene i have added some objects which contains some transparent materials like glass. Now i am able to download and load the scene from asset bundle successfully, but when the scene is loaded the whole skybox appears to be pink, and when i check the lighting settings i can see the skybox material is applied but still it is not reflected in the scene. Some other materials like glass material and reflective materials are loaded but are not in action, they are rendered as a normal material. All the materials remain same with same settings but still rendered differently.
Here are the screen shot of the outputs when i run normal scene and when i load from asset bundle
Normal Scene screen shot
Asset Bundle Screen shot after loading