Price not showing Variable Product with same price variants

I have a few variable products that has variants which do not result in a higher or lower price in the final product.

However, with the latest version of wordpress and woocommerce, the price is not showing on the Product page even after a variant option has been chosen. Only the +/- quantity button, “Add to Cart” button and the “In Stock” text is shown below the variant selection box.

This hasn’t happen before.

Is this a woocommerce issue or a theme issue?

Any suggestions greatly appreciated!

Thank you very much!

Pei

http://wordpress.org/plugins/woocommerce/