How to change the picture when reposting in VK?

Question

PHP

During development, a test image was cached in VK ( http://cs6072.vk.me/v6072041/cbbf/ХХХХХ.jpg), which does not fit the theme of the site, I try to fix it using vk.com/dev/pages.clearCache, but does not work, anyway, when reposting, an old picture falls on the wall. For socialization, I use the standard VK snippet. Please tell me how to solve the problem.

Answer 1

Do you have a share widget on some page and when you click it, this picture pops up?