Comment 13 for bug 363038

"revision 611" - this refers to a change in the casper bzr repo, which corrects a misuse of head (we don't have the 'head' command available in the initramfs). I've pushed a change that fixes this, but I haven't uploaded yet because it doesn't appear to be related to the problem in Pete's logs.

It is, however, the problem that Robbie was reproducing (the error in the preceding log is actually due to a mis-application of the fix), and may be the bug that the original submitter (and others) are actually hitting.