We setup a few (14 to be exact) different eCommerce solutions for WordPress to test and evaluate for our use and WP Online Store is great except for one MAJOR flaw. It breaks something in EVERY theme we have tossed its way. If we disable the cart plugin (or remove it's shortcode) the problem goes away. It breaks menus in some themes, it breaks footers in others. Obviously we can't have a website with no navigation, so the menu breaking is unacceptable and the footer being broken is a HUGE issue as well. Has anyone else experienced this? Should we try a clean install again?