If you do not upload the proper files of course your not going to get the cache stuff displayed.
Now on to this issue it has nothing to do with your integration unless of course the function is missing from your ib2.php file
Now if I look at the ib2.php file this is there
function get_regcode() {
global $Globals;
$regtext = " · <a href=\"{$Globals['vbulletin']}/index.php?act=Reg&CODE=00\">{$Globals['pp_lang']['register']}</a>";
return($regtext);
}
Now the get_regcode is called in the topmenu function which is called in the scripts like index.php now at the bottom of pp-inc.php is this
// Now lets include the forum integration
require "{$Globals['RP_PATH']}/forums/{$Globals['vbversion']}.php";
So we go back to why your site is not pulling one of the following
1. The RP_PATH
2. The $Globals integration variable
3. The file is missing or function does not exist in that file
Some one needs to give me access to a site. The person who reported this thread indeed found out they had not overwritten there file with the new one.