I would have no idea I am talking about your dhtml menu not vbulletin. You would have had to create such a menu. There is no ability in vb
to create custom menus at least without mods. You are actually creating such code so how are you calling that image. Is it a stylesheet reference then make sure you correct the link to any image there.
See this is the image it is looking for http://photocamel.com/gallery/mine/blank.gif
Your using some relative link like so somewhere /mine/blank.gif
No other menu you have created seems to use an image.