WordPress database error: [Key column 'system' doesn't exist in table]
ALTER TABLE pr7_nextend2_section_storage ADD INDEX `system` (`system`)

WordPress database error: [Unknown column 'system' in 'field list']
SELECT `id`, `referencekey`, `value`, `system`, `editable` FROM pr7_nextend2_section_storage WHERE `application` = 'smartslider' AND `section` = 'settings' AND `referencekey` = ''

WordPress database error: [Unknown column 'system' in 'field list']
INSERT INTO `pr7_nextend2_section_storage` (`application`, `section`, `referencekey`, `value`, `system`, `editable`) VALUES ('smartslider', 'settings', '', '{\"n2_ss3_version\":\"3.5.1.4\\/b:release-3.5.1.4\\/r:4180a0be31ca8245fb8b81d21b5e7404d5f5166d\"}', '0', '1')