Couple of things I would try if I encountered this problem; Try running scandisk/error checking on the drive you have poser installed on. (had acorrupted entry in my textures folder that choked Poser every time until I found it, once) Try disabling hardware acceleration. Try changing screen resolution to another & back again. Check & see if there's an update for your video driver (Saw something similar when a VidDriver file went corrupted on a PC) Try a "clean install" of poser on a different drive (if you have one) or under a different folder if you don't. (if it starts okay, restore your Runtime folders one at a time untilPoser no longer starts to see if one of them is causing the problem.) Each thing you try, check poser after, & if no improvement reset back any changes before you try another.