Hello!
I found an error VM upgrading to 3.0.14, Joomla 3.5 and K2 v2.0.7.
In the pages of K2, does not work "mod_virtuemart_cart" module does not recognize the script "modules/mod_virtuemart_cart/mod_virtuemart_cart.php".
Specifically, failure prepareAjaxData function on line 30:
$data = $cart->prepareAjaxData(); (Related "components/com_virtuemart/helpers/cart.php" script.)
Not load content, blank page...
Any idea to fix it?