I've never seen that behavior before - the URLs not being generated for a page. Almost like something broke during execution. Do you happen to have any debug logs or messages in the web server logs? I did notice you do not have shopping_cart in the rewrite pages list - It should not matter, but I'll try mimicking your settings in one of my test stores tomorrow and see what happens.
I also noticed on your site Zen Cart is adding the uprid to the URL for product pages instead of the prid. I've only seen uprids used in section of the database pertaining to orders. I've never seen it added to the end of a product_info URL. If you switch back the the classic template does this still happen?
prid = 6, uprid=6:772c4cf4cfcfb000d9edc58b86b894df
Bookmarks