Cloned from:
https://garage.maemo.org/tracker/index.php?func=detail&aid=3559&group_id=447&atid=1709

If an album has one tag, and I want to remove it, it seems to fail.

I have tagged 'Nightwish' album 'Oceanborn' with a tag 'tulevia'. If I listen
to a song in that album and try to remove it, it fails. After that if I check
the tags, it has not been removed. The following log results:

** (vagalume:14341): DEBUG: Requesting URL
http://userserve-ak.last.fm/serve/174s/8675211.jpg
** (vagalume:14341): DEBUG: Requesting URL
http://ws.audioscrobbler.com/1.0/user/mtapoja/tracktags.xml?artist=Nightwish&track=Passion%20and%20the%20Opera
** (vagalume:14341): DEBUG: Requesting URL
http://ws.audioscrobbler.com/1.0/track/Nightwish/Passion%2Band%2Bthe%2BOpera/toptags.xml
** (vagalume:14341): DEBUG: Posting to URL
http://post.audioscrobbler.com:80/np_1.2
s=e663817bf5dc406e9d465eb4abb04e35&a=Nightwish&t=Passion%20and%20the%20Opera&b=Oceanborn&m=&n=&l
=291
** (vagalume:14341): DEBUG: Correctly set Now Playing
** (vagalume:14341): DEBUG: Requesting URL
http://ws.audioscrobbler.com/1.0/user/mtapoja/albumtags.xml?artist=Nightwish&album=Oceanborn
** (vagalume:14341): DEBUG: Requesting URL
http://ws.audioscrobbler.com/1.0/album/Nightwish/Oceanborn/toptags.xml
** (vagalume:14341): DEBUG: Posting to URL
http://ws.audioscrobbler.com:80/1.0/rw/xmlrpc.php
<?xml version="1.0" encoding="UTF-8"?>
<methodCall><methodName>tagAlbum</methodName><params><param><value><string>mta
poja</string></value></param><param><value><string>1236065208</string></val
ue></param><param><value><string>e68fcce3e4ca86bc667dcd7c738df6f9</string></value>
;</param><param><value><string>Nightwish</string></value></param><param>
<value><string>Oceanborn</string></value></param><param><value><array>&l
t;data/></array></value></param><param><value><string>set</string></valu
e></param></params></methodCall>

** (vagalume:14341): DEBUG: Error in XMLRPC call (tagAlbum): <?xml
version="1.0"
encoding="UTF-8"?>
<methodResponse>
<params>
<param>
<value><struct>
<member><name>faultCode</name>
<value><string>1</string></value>
</member>
<member><name>faultString</name>
<value><string>failed</string></value>
</member>
</struct></value>
</param>
</params>
</methodResponse>
** (vagalume:14341): DEBUG: Requesting URL
http://ws.audioscrobbler.com/1.0/user/mtapoja/albumtags.xml?artist=Nightwish&album=Oceanborn
** (vagalume:14341): DEBUG: Requesting URL
http://ws.audioscrobbler.com/1.0/album/Nightwish/Oceanborn/toptags.xml

Note: This Vagalume version is patched with my own liblyrics patch, but I don't
think it affects this part of Vagalume.