I have been modeling a three-story lobby. I have been embedding V-Ray lights into components so that I only have to create one elevator lobby ceiling that is then repeated on all three floors. I have had no issues with this until a few minutes ago when I got this same "Unable to Edit Light- No Light Asset Was Provided" error message. At first it was just on one new light; I was trying to copy one component that consisted of my can and spotlight, make it unique, change the lighting lumen level, and then use for a different area. I got this error message, but was still able to go to my previous components and tweak the lighting. Then it started spreading, and all of a sudden I get the error on all lights.
If anyone's heard a fix for this issue, please share. Keeping my fingers crossed that shutting down SU and re-starting will do the trick!...