[geigy]

in smf2.php custom_avatar_url should be avatar_url

change:
$result2 = ppmysql_query("SELECT value FROM {$Globals['dprefix']}settings WHERE variable='custom_avatar_url'",$db_link);

to
$result2 = ppmysql_query("SELECT value FROM {$Globals['dprefix']}settings WHERE variable='avatar_url'",$db_link);