"AssertionError: Missing filesystem.size. " at start of file copy stage

[Michael]

Similar to #557625, #670773, #697159, et al, the install crashes at the important actually-installing bit :P

The included casper.log and partman logs are probably of limited use as (judging from timestamps) they appear to relate to the installation of the installer's host system.

Host system is a removable drive, attempting to install to the internal disk of a laptop with no optical drive.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: ubiquity 2.2.27
ProcVersionSignature: Ubuntu 2.6.38-11.50~lucid1-generic 2.6.38.8
Uname: Linux 2.6.38-11-generic i686
Architecture: i386
Date: Wed Oct 19 20:07:36 2011
InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release i386 (20100429)
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_AU.utf8
 SHELL=/bin/bash
SourcePackage: ubiquity