3D Plots in MathCAD 14

Hello,

I'm new to these forums and I just had a quick question.  When I set up a two variable function and try to plot it, MathCAD recognizes the function and seems to plot it successfully but it doesn't display.  I can, however, see contour plots of the same function.  Vector field, 3D scatter plot and 3D bar graphs don't display either.  I'm kind of thinking it's a plugin problem or something.  Any ideas?

Thanks.