The errors from zlib look consistent with a faulty memory module. As the installer now works well for the reporter it is unlikely that this bug ticket will lead to any further resolutions.
Thanks for reporting though :)
** Changed in: ubiquity (Ubuntu)
Status: Unconfirmed => Rejected
--
Installer crashed in 91%
https://launchpad.net/bugs/68759
--
ubuntu-bugs mailing list
ubuntu-bugs@lists.ubuntu.com
https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
