picture not showing after upgrade

[kassimi.hn]

Hi, 

 

I have upgrade my prestashop from 1.5 to 1.6 every things works fine except product images ,it doesn't show up only in product list page. the other page every thing is OK

 

I cleared the cache , I regenerate thumbnails but nothing change 

 

I found this link where someone had the same issue but I  didn't understand (or found) the solution.

 

http://forge.prestashop.com/browse/PSCFV-4068

 

I found in the internet that I have to change "productlist" with "default_home" in product-list.tpl but when I did it nothing change . maybe i didn't put it in the right place Can any one help me please

 

Thank you all