Hey Khai, I'm callin' you out!  (just joking) :D

I have rarely (if ever) encountered this in Poser so it didn't register but it is mentioned in B L Render's book.  Really, without the obj file to examine it could have been ngons, normals, degenerate polygons, double-sided polygons, need for welds/splits (which is a common problem resulting in odd shading results), and so on.

Hopefully that solves it! :)

C makes it easy to shoot yourself in the foot. C++ makes it harder, but when you do, you blow your whole leg off.

 -- Bjarne Stroustrup

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