In order to install OCS 2.4 the following requirement are needed : - Mod_Perl - Make - GCC - mysql-server - apache2 - php - php-mysql - php-gd - php-xml - php-mbstring - php-curl - libxml-simple-perl - libdbi-perl - libdbd-mysql-perl - libapache-dbi-perl - libnet-ip-perl - php-pclzip - libarchive-zip-perl (providing Archive::Zip) - libxml-simple-perl (providing XML:Entities) - libnet-ip-perl (providing NET::IP) - libapache-dbi-perl (providing Apache::DBI) Run "setup.sh" and follow the instructions. If you get a error / warning because of a missing module, install it and retry.