Comment 9 for bug 240670

I doubt it. Can you delete your branch, wait a bit, then try again? https://code.launchpad.net/~thekorn/5-a-day-data/main/+delete

The 5-a-day code in question:

def checkout_branch():
    readonly = "http://"+remote_branch().split("@")[1]
    try:
        branch.Branch.open_containing(readonly)
    except errors.NotBranchError:
        err = setup_local_branch()
        return err
    err = os.system("bzr branch %s %s" % (readonly, files.local_branch()))
    return err