Wow, this is turning out to be much more succesful than I ever imagined. My LightLister for VRay has reached over 3000 downloads. The newest release has had over 450 downloads in just a couple weeks. I never expected this of my little script.
I have had some bugs reported to me regarding using it in conjunction with RPM Manager. I'm looking into them. It appears that if you put a VRay Light in an RPM Manager grouping, there will be a script error if you launch the light lister. I'm hoping there is a workaround