This error indicates a problem reading from your CD drive. I suggest burning the CD at a lower speed and/or using an off-the-shelf drive cleaning kit to clean your drive lens; also, try running a CD integrity check from the boot menu before installing.
** Changed in: ubiquity (Ubuntu) Status: Unconfirmed => Rejected -- installer crashed on manually partitioned system https://launchpad.net/bugs/59495 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs