Z Shadow, nope, using a PC, defrag wasn't necessary, using only 25% of my HD (180GB) and as regular maintenance a defrag is done every month, but like I said I burn everything to cd, so it was just a question of reloading, I asked because I had seen other posts of presets and objects disappearing from Bryce for no reason, and I thought someone might have an insight as to why this happens...guess we're all in the dark on that one...however, I have my suspicions about XP and Bryce...:]

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