Material type 'Autodesk Generic' is not supported.

[leuhinaliza16]

[Diffus3d]

You need to use corona materials.  I would read the user manual for Corona.  There's too much information that you need to learn for any one person to be able to help you, so you're going to have to do a lot of reading to get yourself caught up.  Bottom line, your scene is using the wrong materials for your renderer.  

Best Regards,

[Phil_Morgan]

As written above, the "Autodesk Generic" material is not supported by Corona Renderer. You can use "V-RayMax Converter Pro" to convert your scenes for rendering in Corona.