[Serusers] don't succeed the install

hi everybody i don't succeed to install ser on my debian written: "... dev:/var/www/dev/michael# dpkg -i ser_0.8.14_i386.deb (Lecture de la base de données... 45264 fichiers et répertoires déjà installés.) Préparation du remplacement de ser 0.8.14 (en utilisant ser_0.8.14_i386.deb) ... Stopping ser: ser. Dépaquetage de la mise à jour de ser ... Paramétrage de ser (0.8.14) ... Restarting ser: serERROR: loading config file(/etc/ser/ser.cfg): No such file or directory invoke-rc.d: initscript ser, action "restart" failed. ser failed to (re)start. Perhaps your configuration requires additional modules (e.g. ser-mysql-module, ser-jabber-module or ser-radius-modules). Next try to install any additional ser modules you might need and then (re)start ser by executing the command '/etc/init.d/ser start|restart'. ..." i try to install ser-mysql-module but it doesn't change please help me thanks Michael ps: the install notes are not very well understanding . is there something else?