Comment 0 for bug 831313

I get this error making a transplant.

My source repository is "be" and I want transplant a revision. I can't provide info about the code, because is closed source, sorry.

This is the backtrace:
$ hg transplant -s be '31b797c78bc8'
searching for changes
** unknown exception encountered, please report by visiting
** http://mercurial.selenic.com/wiki/BugTracker
** Python 2.7.1+ (r271:86832, Apr 11 2011, 18:13:53) [GCC 4.5.2]
** Mercurial Distributed SCM (version 1.9.1)
** Extensions loaded: shelve, prompt, reviewboard, branchtools, fetch, histedit, graphlog, color, purge, mq, transplant, rebase, record, inotify
Traceback (most recent call last):
  File "/usr/bin/hg", line 38, in <module>
    mercurial.dispatch.run()
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 27, in run
    sys.exit(dispatch(request(sys.argv[1:])))
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 64, in dispatch
    return _runcatch(req)
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 87, in _runcatch
    return _dispatch(req)
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 679, in _dispatch
    cmdpats, cmdoptions)
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 454, in runcommand
    ret = _runcommand(ui, options, cmd, d)
  File "/usr/lib/pymodules/python2.7/mercurial/extensions.py", line 182, in wrap
    return wrapper(origfn, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/hgext/color.py", line 368, in colorcmd
    return orig(ui_, opts, cmd, cmdfunc)
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 733, in _runcommand
    return checkargs()
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 687, in checkargs
    return cmdfunc()
  File "/usr/lib/pymodules/python2.7/mercurial/dispatch.py", line 676, in <lambda>
    d = lambda: util.checksignature(func)(ui, *args, **cmdoptions)
  File "/usr/lib/pymodules/python2.7/mercurial/util.py", line 385, in check
    return func(*args, **kwargs)
  File "/usr/lib/pymodules/python2.7/mercurial/extensions.py", line 137, in wrap
    util.checksignature(origfn), *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/mercurial/util.py", line 385, in check
    return func(*args, **kwargs)
  File "/usr/lib/pymodules/python2.7/hgext/mq.py", line 3218, in mqcommand
    return orig(ui, repo, *args, **kwargs)
  File "/usr/lib/pymodules/python2.7/mercurial/util.py", line 385, in check
    return func(*args, **kwargs)
  File "/usr/lib/pymodules/python2.7/hgext/transplant.py", line 568, in transplant
    onlyheads=branches, force=True)
  File "/usr/lib/pymodules/python2.7/mercurial/bundlerepo.py", line 318, in getremotechanges
    os.unlink(bundlename)
TypeError: coercing to Unicode: need string or buffer, NoneType found