Seams from displacement is Mental Ray

[gabaghoul]

I just started trying to get the workflow down between ZBrush and Maya and I have encountered a problem in rendering a displacement using mental ray. I must be missing something but whenever I try to render the geometry breaks on me, much like when nurbs surfaces are not tesselated enough and seams become apparent. The tutorial I was going thru was the "Displacement Maps in Maya 5/Mental Ray" in the Practical guide starting on page 434 but instead of using a head I am just using a pSphere just to understand the procedure. The process of UVing I choose was the GUV tiles in Zbrush but the resulting UVs seemed very inefficient. Anyway, I figured it would work the best so I used it. When I imported the obj back into Maya I set it up for a mental ray render using the Approx. editor. The render looked great with some tweaking in the editor but both caps of the sphere were not aligned properly. The geometry was broke. Is there something I'm missing? I am pretty sure I followed the steps exactly 3 times. Same effect every time. Any suggestions?

[elfufu]

i cannot stress enough how important it is that you have only quads, i think non of the tutorials really emphasise this but i have found it to be the difference between it working or not