“Fatal error: Cannot redeclare class FacebookApiException-Collection of common programming errors

I have installed the instabuilder plug in and somehow the SEO Facebook C. plugin is conflicting with it.

Only when the SEO Facebook C. plugin is active accessing this page: http://www.jmuller777.com/blog/?mode=facebook_tab gives me the fallowing error:

“Fatal error: Cannot redeclare class FacebookApiException in /home/denrrou/public_html/jmuller777.com/blog/wp-content/plugins/InstaBuilder/inc/facebook/base_facebook.php on line 107”

I have read that it should be a class issue, but i cant figure out where to fix it.