Plugin is not compatible with Foxiz theme

Hi,

I am facing problem installing this plugin in my website, which is developed using Foxiz theme. How can I resolve this problem.

Error Details
=============
An error of type E_ERROR was caused in line 874 of the file /home/sites/17b/8/8a0f245f5f/public_html/wp-content/plugins/foxiz-core/admin/rb-meta/rb-meta.php. Error message: Uncaught Error: Undefined constant “RB_META_ID” in /home/sites/17b/8/8a0f245f5f/public_html/wp-content/plugins/foxiz-core/admin/rb-meta/rb-meta.php:874
Stack trace:
#0 /home/sites/17b/8/8a0f245f5f/public_html/wp-content/themes/foxiz/templates/template-helpers.php(917): rb_get_meta(‘sponsor_post’, 4632)
#1 /home/sites/17b/8/8a0f245f5f/public_html/wp-content/themes/foxiz/includes/actions.php(259): foxiz_is_sponsored_post(4632)
#2 /home/sites/17b/8/8a0f245f5f/public_html/wp-includes/class-wp-hook.php(312): foxiz_update_metaboxes(4632)
#3 /home/sites/17b/8/8a0f245f5f/public_html/wp-includes/class-wp-hook.php(334): WP_Hook->apply_filters(NULL, Array)
#4 /home/sites/17b/8/8a0f245f5f/public_html/wp-includes/plugin.php(517): WP_Hook->do_action(Array)
#5 /home/sites/17b/8/8a0f245f5f/public_html/wp-includes/post.php(4751): do_action(‘save_post’, 4632, Object(WP_Post), false)
#6 /home/sites/17b/8/8a0f245f5f/public_html/wp-content/plugins/geodirectory/includes/admin/admin-functions.php(308): wp_insert_post(Array)
#7 /home/sites/17b/8/8a0f245f5f/public_html/wp-content/plugins/geodirectory/includes/admin/class-geodir-admin-install.php(511): geodir_create_page(‘search’, ‘page_search’, ‘Search page’, ‘