No we are talking this is an issue with your custom vbulletin css class name. We code our application to work with the vbulletin default system. When using hacks mods or custom styles it is not uncommon to have issues. This is not a vbulletin or a photopost issue. It is an issue with the hack mod or custom style one uses. If you edit that custom style's class names to what I said and alter the header template to use those new names you will not have a problem anywhere.