I agree with everything that's been said here. I'd only add that there is an additional update that CL has regarding memory issues...think they call it Poser Pro Pack Memory Updater and it's for Poser Pro Pack users with greater than 1GB of total memory (RAM + virtual memory = more than 1 GB.) to run normally. I use XP also and I've had the problem when I'd do a "new window" render and it fixes the problem immediately. just my two cents jen

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