product navigation not showing up

Hello:

I'm running joomla 2.5 with virtuemart 2.0.20b, using the e-commerce template. I cannot get the production navigation to show up on the product details page. the "show the product navigation" is checked in the virtuemart shopfront configuration tab.

any help would be appreciated.

Never mind. I fixed it.. The php code for the product details had the code commented out.