I am getting a very similar error message:
[Mon Aug 10 05:48:26 2015] [error] [client 66.249.92.54] WordPress database error You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near ‘%d) GROUP BY wp_ngg_pictures.pid ORDER BY id DESC’ at line 1 for query SELECT DISTINCT wp_ngg_pictures.* , GROUP_CONCAT(CONCAT_WS(‘@@’, meta_key, meta_value)) AS ‘extras’ FROM wp_ngg_pictures
LEFT OUTER JOIN wp_postmeta
ON wp_postmeta
.post_id
= extras_post_id
WHERE (exclude
= %d) GROUP BY wp_ngg_pictures.pid ORDER BY id DESC made by nggMediaRss::get_last_pictures_mrss, nggdb::find_last_images, C_Image_Mapper->run_query, ExtensibleObject->__call, ExtensibleObject->_exec_cached_method, ReflectionMethod->invokeArgs, C_CustomTable_DataMapper_Driver_Mixin->run_query
I am using the most recent version of WP 4.2.4, and the most recent NextGen version 2.1.2. Has there been any progress on this?
Thanks!
Donna