It's again the problem that the album is not in the US itunes store, only in the GB.
You can modify the script to get to other catalogs than the US catalog. For example to get the GB catalog, change the following two lines to appear like this:
[IndexUrl]=http://itunes.apple.com/search?term=%s&entity=album&limit=100&country=GB
[AlbumUrl]=http://itunes.apple.com/lookup?country=GB&id=