问题
After upgrading my magento system from version 1.4.1 to 1.6.2 my categorie pages and product pages return the magento 404 error. products do show up on my homepage product lists but i can't get to their detail page because they also return a 404. Any suggestions? My cache is currently disabled for development.
来源：https://stackoverflow.com/questions/9875296/magento-product-and-category-pages-return-magento-404