This as the result of a package becoming corrupt on your file system or in memory:
Mar 28 20:00:51 ubuntu ubiquity: Preparing to unpack .../language-pack-en-base_1%3a14.04+20150219_all.deb ... Mar 28 20:00:51 ubuntu ubiquity: Unpacking language-pack-en-base (1:14.04+20150219) over (1:14.04+20140707) ... Mar 28 20:00:51 ubuntu ubiquity: dpkg-deb (subprocess): decompressing archive member: lzma error: compressed data is corrupt Mar 28 20:00:51 ubuntu ubiquity: dpkg-deb: error: subprocess <decompress> returned error exit status 2 Mar 28 20:00:51 ubuntu ubiquity: dpkg: error processing archive /target/var/cache/apt/archives/language-pack-en-base_1%3a14.04+20150219_all.deb (--unpack): Mar 28 20:00:51 ubuntu ubiquity: subprocess dpkg-deb --fsys-tarfile returned error exit status 2 Mar 28 20:00:51 ubuntu ubiquity: No apport report written because the error message indicates an issue on the local system -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1437706 Title: installing ubuntu 14.04.2 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubiquity/+bug/1437706/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs