Comment 5 for bug 697815

Right, finding the last working revision is the tricky bit, try searching your '.bzr.log' file for messages like:

  201.324 Committed revid <email address hidden> as revno 60.

You should find one for '<email address hidden>' which has been lost (I dunno if you edited this one to inject '<email address hidden>' but the date '20101204' seem to match your empty pack file so it's probably the lost revision), and a previous one which should be working.

Once you have that one you can use it as -rrevid:<the_good_one> in your branch command.