Link to car model by Fabio Palvelli
Don't panic; This can be fixed! Chance's are you are using an unsupported material that Corona doesn't recognize.
Solution?
- Recreate the problematic material and replace it with a Corona material.
- Consider running the latest Corona Preview and use our scene converter. (V-Ray only) Cinema 4D Previews
- Run Corona Tools plugin created by Robert Hitzer (Works with C4D and V-Ray materials only - See site for limitations)
Example
For more information on creating materials, Please see this article: How to create basic materials?