Product images are not displaying on product list pages after upgrade to 1.5.6.2

[jarnail]

Hi,

   I upgraded my prestashop store 1.5.3.1 to 1.5.6.2 with 1-clcik upgrade but images are not displaying on product list pages. I tried by regenrating image from Preference->images but its giving error:

 

 

    Original image is missing or empty (/home/sitename/public_html/img/p/3/8/9/389.jpg) for product ID 290

    Original image is missing or empty (/home/sitename/public_html/img/p/4/4/6/446.jpg) for product ID 356

    Original image is corrupt (/home/sitename/public_html/img/p/6/7/1/671.jpg) for product ID 491 or bad permission on folder

 

 

I wasted good amount of time but it didnt work.