Image of Product not displayed in front-end

hi my friends

i had the same problem,maybe the problem with plugins.

i don't see the image of my product in front-end(marketpress),however,i disabled all my plugins except the coursepro and marketpress.

the second problem,i had a problem with the profil of the instructor,exactly with his avatar,when i edited then profil in front-end,i had the multiple image of his avatar,instead one image.