Sharing error: Provided og:image is not big enough.

I have started a new blog using the this theme but I’m having problems with Open Graph. When I try to share anything on Facebook (using theme buttons or any other (I’have try thousands of options)) it alwais get a wrong picture.

My blog is http://www.cinercia.es and the most common Open Graph Warnings on Facebook Depure Tool is:

Provided og:image is not big enough. Please use an image that's at least 200x200 px. Image 'http://cinercia.es/wp-content/uploads/2014/03/El-spin-off-de-Disney-sobre-Malefica-protagonizado-por-Angelina-Jolie-entre-los-estrenos-destacados-de-2014-1-520x245.jpg' will be used instead.

Before this mistake I always received a warring saying that my articles pages had duplicated URL’s, but I managed to solve this.

I have tried a lot of things:
-Unistall and Reinstall all the plugins one by one (and cheking if it works before installing the next pluging)
-Use all Social settings in SEO plugins like WPSEO by YOAST or ALL IN ONE SEO.
-Use plugins like Facebook Thubm Fixer and all kind of “Thumb Picker’s”
-I’have use several Open Graph plugins (but I just got uplicated metadata)
-I’have also tried to emty all cache’s
-I have cofigured WP to not creating thumbnails.

Any of this has works properly.

One odd thing is that the mistake does not happen with all the users and it works well with some posts kins like Video or Gallery posts.

How could I solve this?

Thanks in advance! (and excuse me about my horrible english).