Language selector does not work

I have configured multiple languages, but enabled only one es (Spanish). However, the language selector in the page header shows all languages except Spanish. The local config file shows the following:

$Foswiki::cfg{Languages}{ja}{Enabled} = 0;

$Foswiki::cfg{Languages}{es}{Enabled} = 1;

$Foswiki::cfg{Languages}{it}{Enabled} = 0;

$Foswiki::cfg{Languages}{'zh-cn'}{Enabled} = 0;

$Foswiki::cfg{Languages}{pl}{Enabled} = 0;

$Foswiki::cfg{Languages}{cs}{Enabled} = 0;

$Foswiki::cfg{Languages}{sv}{Enabled} = 0;

$Foswiki::cfg{Languages}{nl}{Enabled} = 0;

$Foswiki::cfg{Languages}{de}{Enabled} = 0;

$Foswiki::cfg{Languages}{da}{Enabled} = 0;

$Foswiki::cfg{Languages}{ru}{Enabled} = 0;

$Foswiki::cfg{Languages}{bg}{Enabled} = 0;

$Foswiki::cfg{Languages}{pt}{Enabled} = 0;

$Foswiki::cfg{Languages}{fr}{Enabled} = 0;

$Foswiki::cfg{Languages}{'zh-tw'}{Enabled} = 0;

Which looks correct to me. In fact if I manually reverse the zeros and ones in the local config file I still get the same language selector. How do I solve this problem? Thanks for any help anyone can provide.

--Main.MikePengelly - 02 Sep 2010