Known limitation: The standard MySQL Installer upgrade process does not always upgrade 1.4.10 to 1.4.11. Users that upgraded to 1.4.10 (between 2015-08-19 and 2015-08-23) must manually install 1.4.11. This is recommended. Community edition users can download 1.4.11 from here, and Commercial edition users can download and install the "MYSQL INSTALLER COMMERCIAL 1.4.11 UPDATE PACKAGE (32 BIT)" package from My Oracle Support (MOS). For additional details, see http://bugs.mysql.com/78138.