I've got this strange issue with corona, tried it with version 4 and 5. Started happening after I updated from version 3. The corona sun is invisible in render, and in a minute starts to bug out the whole plugin effectively crashing C4d. Tried it with C4D version 19 and 21. Same issue, seems to be plugin related.
Drivers are up to date... wouldn't know what the issue could possibly be. I attached the bugreport.
* Disregard this post, the issue has been fixed