I believe this is upstream bug https://bugzilla.gnome.org/show_bug.cgi?id=653404 and has already been uploaded/fixed in oneiric with file-roller 3.1.90.
** Bug watch added: GNOME Bug Tracker #653404 https://bugzilla.gnome.org/show_bug.cgi?id=653404 ** Also affects: file-roller via https://bugzilla.gnome.org/show_bug.cgi?id=653404 Importance: Unknown Status: Unknown ** Changed in: file-roller (Ubuntu Oneiric) Status: Confirmed => Fix Released -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to file-roller in Ubuntu. https://bugs.launchpad.net/bugs/838324 Title: Cannot unzip zipfiles Status in File Roller: Unknown Status in “file-roller” package in Ubuntu: Fix Released Status in “file-roller” source package in Oneiric: Fix Released Bug description: On opening zip files file roller claims "File type is not supported" although the unzip package is installed. ProblemType: Bug DistroRelease: Ubuntu 11.10 Package: file-roller 3.1.2-0ubuntu1 ProcVersionSignature: Ubuntu 3.0.0-9.14-generic 3.0.3 Uname: Linux 3.0.0-9-generic i686 Architecture: i386 Date: Wed Aug 31 21:29:31 2011 ExecutablePath: /usr/bin/file-roller InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110828) SourcePackage: file-roller UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/file-roller/+bug/838324/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

