[Plugin: JQuery Vertical Mega Menu Widget] Causing my Theme jquery Navigation to Disappear

Hi,
I love this plugin, however, I’m having an issue with the main navigation of the site, which I don’t want to change. WHen the plugin is enabled, and you hover over an item in the main menu, the sub navigation disappears before you can click it, however, when the plugin is disabled, it doesn’t do that. Can you tell me what I should edit to prevent this from happening? I want to be able to use both.
I’m developing here:
http://www.demosights.com/marketech360

http://ww.wp.xz.cn/extend/plugins/jquery-vertical-mega-menu/