Greetings, First, you didn’t say which operating system you are using, so I am assuming a Debian-based one. Second, why install from CPAN when there is likely a package for it already? $ sudo apt-get install libpdf-api2-simple-perl In fact, frequently libraries can be changed from foo::bar into libfoo-bar-perl to install them. Last, the error message is clear about the problem: Can't locate inc/Module/Install.pm in @INC There is a prerequisite (Module::Install) missing. Whether it is a requirement for your building environment or the actual library is not clear in the message. Hopefully, you will find this enlightening and helpful. GPML, Mark Tompsett -----Original Message----- From: Rivikantha Herath Sent: Thursday, February 27, 2014 10:52 PM To: koha@lists.katipo.co.nz Subject: [Koha] Problem with installing perl module I am trying to install some PERL modules via CPAN. The module is PDF::API2::Simple I am getting the following error [SNIP]