I can't display a message in gnus.

Hello, I compile and use the : "XEmacs 21.5 (beta18) \"chestnut\" (+Xft+CVS-20041209) [Lucid] (i686-pc-linux, Mule) of Thu Feb 24 2005 on petoncle" I use gnus for my mails : "Gnus v5.10.6" And I can't display some mime-mails. I get in the message-line : Symbol's function definition is void: xft-xlfd-font-name-p The head of the mail is bellow : Is it an xemacs error, a gnus error, a error in my configuration files ? Have a good day ! François ... MIME-Version: 1.0 ... Content-Type: multipart/alternative; boundary="------------070205040709040400070907" ... This is a multi-part message in MIME format. --------------070205040709040400070907 Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit