Why is my object red with Corona Renderer in Cinema 4D?

Craft model by Ismael Bakouche under Attribution-ShareAlike 4.0 International (CC BY-SA 4.0)

Terrain model by Rispat Momit under Attribution 4.0 International (CC BY 4.0)

Don't panic; This can be fixed! Chance's are you are using an unsupported material that Corona Renderer doesn't recognize. 


  • Recreate the problematic material and replace it with a Corona material.
  • Consider running the latest daily build and use our scene converter. (V-Ray only) Cinema 4D Daily builds
  • Run Corona Tools plugin created by Robert Hitzer (Works with C4D and V-Ray materials only - See site for limitations)


For more information on creating materials, Please see this article: How to create basic materials?