I'm using drupal commerce and I added a new product (and product display). I can see it in the listing, but when a user click on the product page, it's saying : permission denied. All the other products works fine, it's only the last one which doesn't.
I tried to rebuild the permissions but that doesn't changed anything. How can I check what is "denying" the page ?
I found that for drupal 7, the devel module as a submodule called developper node access which shows exactly what I want. For this you need first to enable it and the active the access by user block. This block shows for every users if the current node is accessible and if not why (i.e. which module is denying it).
If your using Apache you might as well look at your .htaccess configurations. I faced a similar issue in the past and by using appropriate permission in the .htaccess file everything fell in place.
Refer http://www.digitalocean.com/community/tutorials/how-to-use-the-htaccess-file to learn more about configuring .htaccess file
