quantity on product detail page doesn't work

[mabeall32]

Joomla 3.6, Virtuemart 3.014
When you go to a product detail page  and select the + and - to change quantity or the add to cart button it doesn't work.  if you select the quantity and add to cart on category/product list view.  it works.  How do I get it to work on the product detail page.

[mabeall32]

on the config page on Pricing Tab I had the default to show no prices.  I change it to the default and now it works.