WooCommerce Products not showing in admin back-end

Hi,
I’m running wordpress 4 and woocommerce 2.2.

I’ve added a couple demo products to my site, but they are not showing up in the Admin area… I can see there are 2 products, but the list is empty.

I’ve uploaded a screenshot here: http://s17.postimg.org/kvpm1tsof/i_Surgery.jpg

I’ve never seen this issue before and have no idea what is causing this.

Have you ever come across this before?

Any help, advice or suggestions are very much appreciated…