If you installed the previous version for vb3.0, you will no longer use the
www.sitename.com/linkme.php link anymore. The link will now be
http://www.sitename.com/misc.php?do=linkme and also, you will need to revert/delete your linkme template before uploading the product.
And make sure you have the site url in your admincp -> vboptions is set properly or else your images will not appear.