Events Manager Plugin

This error is way out of my league. Any thoughts on how to resolve it?

2 PHP Fatal error: Uncaught Error: Call to a member function count_errors() on null in /nas/content/live/safeco/wp-content/plugins/events-manager/classes/em-event-post-admin.php:61\nStack trace:\n#0 /nas/content/live/safeco/wp-includes/class-wp-hook.php(292): EM_Event_Post_Admin::admin_notices_filter(Array)\n#1 /nas/content/live/safeco/wp-includes/plugin.php(212): WP_Hook->apply_filters(Array, Array)\n#2 /nas/content/live/safeco/wp-admin/edit-form-advanced.php(219): apply_filters('post_updated_me...', Array)\n#3 /nas/content/live/safeco/wp-admin/post.php(206): require('/nas/content/li...')\n#4 {main}\n thrown in /nas/content/live/safeco/wp-content/plugins/events-manager/classes/em-event-post-admin.php on line 61

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