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 dailybuild and use our scene converter. (V-Ray only) Cinema 4D Dailybuilds
  • 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?