I get this warning after activating image-shortcake
(!) Warning: array_key_exists() expects parameter 2 to be array, null given in .. /wp-content/plugins/image-shortcake/inc/class-img-shortcode.php on line 34
]]>Strict standards: call_user_func_array() expects parameter 1 to be a valid callback, non-static method Image_Shortcake::admin_notices_warning() should not be called statically in /wp-includes/plugin.php on line 496