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Just go to the "File" menu on top of your Rhino window, then chosse "Properties", and so on, following the sequence I described, until you get to "Open GL". Once there you uncheck the...

I just installed Rhino 4.0 on my laptop with Vista and a nVidia video card. Initially the partitioned screen was looking all messed up, although if I maximized one of the views that would work fine....