I found (on a mac.. but that may not matter) that if you install Vue when another version has been there (demo, D' going to Pro, etc) that it sets off the stupid copy protection!! Now this is only a guess but... I wiped my hard drive once, didn't fix it... wiped the drive with overwrite (have the computer write 1's and 0's over it to distroy any info on there) you install the new version and it seems to work, well better.. (though i have to say... nor one crash in the last month or so) I'm guessing again but there might be a "hidden" file somewhere with the serial #'s for E-ons stuff... and they get all cunfused, so it thinks it's a stolen copy.... make since? I suggestion.. back up everything, wipe drive, reinstall system, install Vue... bet it works :) (hey think on the bright side, it's making you back up which you shopuld do anyway and reinstalling like that will defrag your drive, and it'll get rid of any "bloat/spy" ware you may have and not know it :)

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Hexagon, Carrara, Sculptris, and recently Sketchup.