Thanks for reporting. This bug may be a duplicate of #73281, but we need more detailed information to be able to determine that. Could you please attach /var/log/syslog and /var/log/partman to this bug, by commenting on the bug's web page?
Further information: Since this is a Live CD based installer you have likely lost the original log files when you turned off or rebooted the machine. In that case the only way to get the log files is to reproduced the install procedure (with the crash) and upload the files directly from the Live CD. Please let us know if you are able to do that at this stage. To upload the files you need to run firefox from the Live CD session where the installer crashed, visit this bug page and click on 'Add a comment/attachment' at the bottom of the page. Click Browse and navigate to the requested files in /var/log. ** This bug is no longer a duplicate of bug 73281 installer crashed ** Changed in: ubiquity (Ubuntu) Status: Unconfirmed => Needs Info -- Critical Error in instalation Kubuntu https://launchpad.net/bugs/73015 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs