I've got a scene I'm working on and it's 45MB. It contains a Poser character plus two mesh trees but otherwise its all Bryce - terrains, lattices and primitives. I've certainly worked on larger scenes before without this ever happening. The scene is blocked out, my lighting and textures are set and I'm ready to add that final clutter of foliage, etc. and call it done! I open up the scene file and all my lattices have gone invisible! I see their names, I can select them and Bryce shows me a box but there's nothing there. If I bring the selected invisible lattice into the Terrain editor its black. I had a gate lattice and over a 100 low res lily pad lattices and now I've got what? A 101 boxes that show nothing when I render! lol Also some of my picture textures turned black. Whatever picture texture I had originally there, it's now just an all black picture. The gate used one of the picture textures but the lily pads used procedurals. Yes I have a backup file and its suffering from the same symptoms ;) So I deleted all the invisible lattices and recreated them - had to reposition and rotate a 100 lily pads on my pond again! lol - and everything now seems fine. I would really love to avoid having this happen again - wasted a whole weekend recreating what I had already done when I could have been finishing the darn scene. It takes me long enough as it is to finish something without this happening! ;) Anybody care to speculate on what the heck went wrong? I've got a K2 400, Win98 SE with 128MB RAM.