Please help with vegas

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I cant seem to get vegas opened, every god damn time this fcking error happens, 1st I tried it with the vegas 10 trial 32-bit, same error, and now vegas 8.0 pro, same error. I need vegas I want to magic bullet my montages, and feel that its necessary for montages.
I use vista 32-bit
helps if you do a bit of searching 



i even made DEP unblock it(Data execution prevention) still no progress.