The theme is very attractive. https://www.nopcommerce.com/p/1381/noproot-bootstrap-theme-free.aspx
In the demo, the Categories works find, but after download it to my local computer nor upload it to the hosting server, the left SubCategories is missing when I open a specific product page.
Here are two pictures https://drive.google.com/folderview?id=0B6zgcpc7j2WoWU5RNWt1bjg5ZDQ&usp=sharing
Is it a bug?