Archery uses external commands to extract files. You'll have to install the relavant program for the file types you need. Microsoft Cabinet archive cabextract http://www.kyz.uklinux.net/cabextract.php 7-zip archive p7zip http://p7zip.sourceforge.net/ InstallShield CAB unshield http://synce.sourceforge.net/synce/unshield.php CPIO gnu cpio http://www.gnu.org/software/cpio/ LHa LHa for UNIX http://lha.sourceforge.jp/ ACE Unace for Linux http://www.winace.com/ Unfortunately, the non-free unace v2.5 is needed for newer ace files RAR unrar-gpl http://home.gna.org/unrar/ unrar http://www.rarlab.com/rar_add.htm rar http://www.rarsoft.com/ ARJ unarj http://www.arjsoftware.com/ TAR gnu tar http://www.gnu.org/software/tar/