I believe you just have to remove any packages with ubiquity in the name and also gparted if you want an installation that is identical to what should be installed. I think it crashed just as it was trying to remove the installation packages.
-- [FEISTY-12/01/06] Ubiquity Installer Crashed https://launchpad.net/bugs/74178 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
