pb with script galleryadd.pl

mo-net04:~ [292]# ./galleryadd.pl -c import -d "test importation" -g http://fotomo.local/gallery2 -G 2 -n -u admin -p mypass -t Importation -v /srv/import
Logging ON. Logfile: /root/.galleryadd.log

System http://fotomo.local/gallery2/main.php [G2]
Login: admin Can't locate object method "POST" via package "http://fotomo.local/gallery2/main.php" (perhaps you forgot to load "http://fotomo.local/gallery2/main.php"?) at ./galleryadd.pl line 255.

Not sure which package is missing... (Do I have any missing package ?)

versions :
_Debian Etch 4.0
_gallery2 2.1.2-2
_galleryadd-2.30
_mysql-server 5.0.32-7etch1
_apache2 2.2.3-4
_php5 5.2.0-8+etch4
_perl 5.8.8-7

Any clue ?

Thanks !