the plugin doesn't hook into wp_head(); under P2
when editing the header.php file to put in the script and css links manually, the plugin still doesn't work unless i kill the css behind P2. then the buttons show and work fine.
there's probably too much going on in P2 to make it work as plugin.
i looked into adding your code to the theme directly ... but there's a lot going on in those files, i'd prefer a plugin.