Hi, have you dropped the texture onto the decal object with UVW mapping? Could you share a screen grab of your setup please? John :-)
Perhaps this might help?https://support.corona-renderer.com/hc/en-us/articles/4417034655505-How-to-use-Corona-Decal-object-in-Cinema-4D-
otherwise, here's a simple examplehttps://forum.corona-renderer.com/index.php?topic=34936.msg193113#msg193113also, worth checking out Max's threadhttps://forum.corona-renderer.com/index.php?topic=34613.msg190883#msg190883
Can you try using a Corona bitmap and let us know the outcome?
Hi there, can you share the scene with us? If so, please feel free to zip the file and forward it to us at support@corona-renderer.com. Thanks!