PhP Myvideoblog thumbnails dont work!

Hi i decided to make a adult video blog using PHP MyvideoBlog 3.1.5. I wanted to use the Videoflick 2.4 theme by press75 but the thumbnails dont work. how do i get them working. any help will be great. thanks

Go back to 2.2, had too many probs with 2.4, don't think anyone got it to work.