If your page goes all white, most of the time that's a php error. plugins can cause that too. But if you are saying that your content area is blank..(no cart info) make sure you have your normal page elements in there that pertain to your theme. You have to keep the normal frame work of your themes page.php... then between your content divs that hold the main content put that code below.
<div class="woocommerce">
<?php woocommerce_content(); ?>
</div>