If you have problems with javascript errors, please make sure, you have not installed other lightbox plugins like thickbox, lightbox2 and so on.
When you install the multibox plugin, there will be used the mootools framework in version 1.11. If you have problems, you can switch the mootools version in the settings page to v 1.2.
If you make use of the NextGen Gallery Plugin, checkout the troubleshhoting:




