
I think it may be something to do with the map having more than 1000 bitmaps. Some models (although you can't see them in this picture, because I fubared the rebuild) have random textures as well as the BSP. It looks fine in game, but it makes SparkEditng an ugly nuisance as the textures change and flicker as the camera moves. It also makes object identification harder.
Any help would be appreciated,
Phil.