Posted in Common Support Issues
In Joomla 1.5.19 The "Mootools 1.2.4 upgrade plugin" was added but by default it is disabled.
There is more info about this plugin here
Version 2.6/2.7 of the gallery has both mootools 1.11 mode and mootools 1.2 mode. You can change this in the component paramaters. If you activate the mootools upgrader plugin, please activate mootools 1.2 mode in the gallery.
