Inkscape is great at opening PDF's so my recommendation is to try an get your drawing into this format. Having said that, I know you've tried saving as PDF, but it's possible PDF component of VectorWorks isn't up to scratch. You might like to try saving as EPS and then converting that to PDF, or po...

I am trying to figure out the best way to get vector based drawings from VectorWorks into Inkscape with as little mangling as possible. VectorWorks is a CAD program much like AutoCAD, used more in the Architecture and Entertainment Production industries. It is made by Nemetschek. http://www.nemetsch...