Dear all, I have installed koha-16.05.01 on Ubuntu 16.04 with all required perl modules having no error by using old stable koha repository echo deb http://debian.koha-community.org/koha oldstable main | sudo tee /etc/apt/sources.list.d/koha.list Earlier getting errors, using koha-repository for stable version mention below echo deb http://debian.koha-community.org/koha squeeze main | sudo tee /etc/apt/sources.list.d/koha.list With regards, Vijay Kumar