I've been dealing with this problem for months, but I've now hit the fulcrum of my frustration creating a scene where the lighting is of key importance. I have all my lights arranged in the scene. All of my characters contain unique names. All of my lights are parented to walls or figures. All of my lights are named unique names. The problem is when I import either a seperate poser scene, or importing a character that has parented lights, suddenly poser deletes some lights that are already on the set, or renames lights, creates duplicate names of lights in the light selector when no duplicate light really exists. I've even tried locking the lights on the set before importing anything new. Am I doing something wrong or is the lighting system completely full of bugs and anti-productive?

It's not the best, that's for sure. I think the problem may be in your exceeding poser's limits somewhere and when it gets to that point, it seems to have a little mental breakdown. I've noticed this if I import too many characters into a scene.

Try saving your light setup in the lights library, then if you import something that duffs up your lighting, you can just reload it.

Each light can be in only one place at a time. Perhaps "renaming" a light does not make it a different light??

If I save the general lighting scheme as a lighting preset, then each time I apply the general lighting scheme it will ruin the configurations of the character specific lighting schemes that I have set up individually in each scene that I'm importing, and also that I've saved with the characters in the characters folder. I might be reaching some form of limitation, but I'm not sure. If anyone has downloaded the "War Room" set, the artist used at least a dozen lights, and my scene goes bunk after I import in any sort of character with parented lighting. I think Doozy may have a good point. Perhaps Poser thinks I'm importing the same lights that already exist, just in different locations. Anyway, I thought each light was only supposed to exist in one place at one time, but best judge for yourselves. In this case Poser deleted my original GUN RACK LIGHT and renamed the imported light to GUN RACK LIGHT, and Poser deleted SHOP KEEPER LIGHT but still registered it in the Light selector and also the second imported light got renamed to SHOP KEEPER LIGHT, so two names appear, but only one light exists.