The first thing I’d try is deactivating all of your other plugins to check for conflicts.
The reason for this may be because of your blog settings. You should increase your setting for ‘Blog pages show at most’ (found in Settings > Reading).
If you’d like the amount to be independent from your blog post pagination then take a look at this inspired solution from ‘Steve’.
http://ww.wp.xz.cn/support/topic/woocommerce-pagination?replies=23
A quick, simple workaround could be to turn breadcrumbs back on, in your Weaver II Pro theme, and check if the WooCommerce breadcrumbs appear.
If they do appear, try inserting this bit of code into your stylesheet or ‘custom styles’ theme option to hide the theme breadcrumbs.
#breadcrumbs { display:none; }
