All versions, all operative systems.
The phenomen goes both for camera and viewset.
To reproduce:
create camera and give it a name
delete the camera
create a new camera and give it the same name as the deleted
Keyshot says that the camera already exists.
You should ofcourse be able to name a camera or viewset to a deleted name.
But for some reason the deleted camera goes away but the name is still occupied.
Thank you for the feedback. This issue has been resolved for KeyShot 7.