PHPNuke block code to generate a listing of albums errors.

I'm trying to generate a linkable listing of my gallery top level albums on my PHPNuke website. I have a block with the following code which almost works:

$GALLERY_BASEDIR = "/home/httpd/majjix.com/modules/gallery/";
require_once($GALLERY_BASEDIR . "init.php");
$albumDB = new AlbumDB(FALSE);
$numAlbums = $albumDB->numAlbums($gallery->user);
for ($i=1; $i <= $numAlbums; $i++) {
   $album = $albumDB->getAlbum($gallery->user, $i);
   $albumName = $album->fields["name"];
   $albumTitle = $album->fields["title"];
   $albumURL = makeAlbumUrl($albumName);
$content .= "<img src=images/blocks/icon_dot.gif>&<a href=\"$albumURL\">$albumTitle</a></br>\n";
}

The problem is if I go into the gallery as module in PHPNuke with the above code enabled it fails with the following error in the logs:

http://www.majjix.com/modules.php?name=gallery

PHP Fatal error:  Call to a member function on a non-object in /home/httpd/gallery.majjix.com/classes/AlbumDB.php on line 218

The random and new albums blocks on the PHPNuke site seem to working perfectly with this code:
http://www.majjix.com/

Any suggestions?