[Plugin: Multi-level Navigation Plugin] One JS-error

Explorer 8 telles me that there is an error in a js-file in multi level navigation plugin.

Line: 2
Char: 2
Code: 0
URI: http://www.gevinstguide.com/wp-content/plugins/multi-level-navigation-plugin/scripts/superfish_settings.js.php?ver=1.0

The menu works fine, but I would love to get rid of this error. Any advice?

http://wordpress.org/extend/plugins/multi-level-navigation-plugin/