OK. Here's the latest. Seems to be fine. But now I have other problems. Up until now, I've been working with the 1st light I created, which was originally an omni. I changed it to a spot and was working in the left-hand corner of the room. (There are 4 sets of 2 lights for each corner). Now that I've moved onto another corner, I find that a created spotlight has a shadowcam with different parameter dials. An omni (or ex-omni) has Zoom but a spotlight has Scale instead, and the 2 don't seem to correspond in any way at all. I can't get anywhere near the same setttings with the Scale as I can with the Zoom. It's all too bizarre! Secondly, and even worse from my POV, I can't get the blasted shadowcams to hold the settings I give them. Every time I re-open the .pz3, they've gone back to the default settings. If I save a light set, the same thing happens. Stewer, I glad you popped in. Maybe we can get this from the horse's mouth, as it were. What's this min shadow bias? I haven't seen it. Is it some secret CL dial? And I went into the lt2 file and unhid everything, to see if I could find any useful dials, but I still ain't seen it. All I got was AutoY this, that and the other. Haven't fully investigated them yet, but I will. les, Nice try, but there's not much point in me selling a room pack if people have to use the ground plane as a floor. LOL. So.... how can I do this? I tried starting from a blank doc, deleting all lights - I even set that state in the prefs, but poser always makes the 1st 3 lights omnis, so the shadowcams have zoom params. Argh! I love poser because it's so hackable, but sometimes it drives me to the brink of suicide. mac