I just noticed an issue while doing some quick tests with references
If you import a scene as a reference and select one of the referenced lights that doesnt have a vray package, vray tries to add a package and fails.
The event log ends up being filled with warnings - "Warning: Failed adding light settings to "name" item with error : LXe_FAILED !"
To try this, create a new scene, add a sphere then save it and close it. Start a new scene, then file > import reference the scene you just saved. Select the referenced directional light
If you import a scene as a reference and select one of the referenced lights that doesnt have a vray package, vray tries to add a package and fails.
The event log ends up being filled with warnings - "Warning: Failed adding light settings to "name" item with error : LXe_FAILED !"
To try this, create a new scene, add a sphere then save it and close it. Start a new scene, then file > import reference the scene you just saved. Select the referenced directional light