I got a lot MySQL error in some mysql_query in native WP functions, all of them in wp-includes/ folder.
MySQL server version is 5.5.42, and all table types are MyISAM.
MysqlError: Unknown storage engine 'InnoDB'
It is called in wp-db.php, rating.php, plugin.php, admin-header.php and index.php, last two files are in wp-admin/ folder.
Delete the innodb log files and try restarting your mysql services on the server. That will work ..