I am new to blender and have created a 3D model of a spaceship using version 2.78 in cycles. This ship has textures using pics, which have been unwrapped, and also using materials such as emissions, diffuse, etc. When I render all looks awesome. When I export all textures and materials are not present (mtl file is present), there is just a grey 3d model. Yes I can reapply the texture but not the emission, diffuse etc materials. I can't bake it for export as I get an error "no active material found". How can I get my 3d model with all textures and materials exported. I have options for .obj format. This is the format accepted by the compositing program I am using; hitfilm.