When I enabled friendly url, it used to give me an error for the route. I fixed this by changing the .htaccess permissions to 605. This took care of the error.
When I enable friendly URLs and click on a category, it changes the url from http://pakdukaan.com/index.php?id_category=17&controller=category&id_lang=1 to http://pakdukaan.com/en/17_memoryram
However when I click on a product from the category, it redirects to http://pakdukaan.com/en/index.php?controller=404
I'm not sure why it's giving me issues with the friendly URLs on the product pages.