Moving a folder while Download()s are running causes exceptions.RuntimeError: maximum recursion depth exceeded while calling a Python object

I created a folder named "BrokenFolder" on a remote machine and filled it with lots of empty files.
Reconnected the local machine to Ubuntu One and the client started to download the files.
In the middle of a transfer I moved the folder containing the files being downloaded first to another name ("SomeOtherFolder") and then moved it away from Ubuntu One directory.

2012-08-13 09:47:09,906 - ubuntuone.SyncDaemon.ActionQueue - DEBUG - offload pop: Download ('', 'ea25e3d8-20b9-41c8-9c16-bd1354fd0c65', 'sha1:d
a39a3ee5e6b4b0d3255bfef95601890afd80709', '/home/rtg/Ubuntu One/BrokenFolder/6/91') {}
2012-08-13 09:47:09,907 - ubuntuone.SyncDaemon.ActionQueue - DEBUG - Download share:''
  node:'ea25e3d8-20b9-41c8-9c16-bd1354fd0c65' Download(path="'/home/rtg/Ubuntu One/BrokenFolder/6/91'", running='False', share_id="''", node_
id="'ea25e3d8-20b9-41c8-9c16-bd1354fd0c65'", server_hash="'sha1:da39a3ee5e6b4b0d3255bfef95601890afd80709'") queueing
2012-08-13 09:47:09,907 - ubuntuone.SyncDaemon.EQ - DEBUG - push_event: SYS_QUEUE_ADDED, kwargs: {'command': <ubuntuone.syncdaemon.action_queue
.Download object at 0x41112c0>}
2012-08-13 09:47:09,910 - twisted - ERROR - Unhandled error in Deferred:
2012-08-13 09:47:09,911 - twisted - ERROR - Unhandled Error
Traceback (most recent call last):
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1181, in unwindGenerator
    return _inlineCallbacks(None, gen, Deferred())
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/action_queue.py", line 1093, in _really_execute
    yield cmd.go()
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1181, in unwindGenerator
    return _inlineCallbacks(None, gen, Deferred())
--- <exception caught here> ---
  File "/usr/lib/python2.7/dist-packages/twisted/internet/defer.py", line 1039, in _inlineCallbacks
    result = g.send(result)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/action_queue.py", line 1379, in go
    self.pathlock_deferred = self._acquire_pathlock()
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/action_queue.py", line 2301, in _acquire_pathlock
    return pathlock.acquire(*self.path.split(os.path.sep), logger=self.log)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/action_queue.py", line 176, in acquire
    on_children, len(wait_for))
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/logger.py", line 91, in debug
    self._log(self.logger.debug, *args)
  File "/usr/lib/python2.7/dist-packages/ubuntuone-client/ubuntuone/syncdaemon/logger.py", line 87, in _log
    logger_func(text, *args[1:])
  File "/usr/lib/python2.7/logging/__init__.py", line 1128, in debug
    self._log(DEBUG, msg, args, **kwargs)
  File "/usr/lib/python2.7/logging/__init__.py", line 1258, in _log
    self.handle(record)
  File "/usr/lib/python2.7/logging/__init__.py", line 1268, in handle
    self.callHandlers(record)
  File "/usr/lib/python2.7/logging/__init__.py", line 1308, in callHandlers
    hdlr.handle(record)
  File "/usr/lib/python2.7/logging/__init__.py", line 748, in handle
    self.emit(record)
  File "/usr/lib/python2.7/logging/handlers.py", line 83, in emit
    self.handleError(record)
  File "/usr/lib/python2.7/logging/__init__.py", line 801, in handleError
    None, sys.stderr)
  File "/usr/lib/python2.7/traceback.py", line 126, in print_exception
    lines = format_exception_only(etype, value)
  File "/usr/lib/python2.7/traceback.py", line 178, in format_exception_only
    return [_format_final_exc_line(stype, value)]
  File "/usr/lib/python2.7/traceback.py", line 204, in _format_final_exc_line
    valuestr = _some_str(value)
  File "/usr/lib/python2.7/traceback.py", line 221, in _some_str
    return '<unprintable %s object>' % type(value).__name__
exceptions.RuntimeError: maximum recursion depth exceeded while calling a Python object

At this point Ubuntu One is not advancing the queue and is stuck.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: ubuntuone-client 3.0.2-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-29.46-generic 3.2.24
Uname: Linux 3.2.0-29-generic x86_64
ApportVersion: 2.0.1-0ubuntu12
Architecture: amd64
Date: Mon Aug 13 10:03:46 2012
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 12.04 LTS "Precise Pangolin" - Alpha amd64 (20120225)
PackageArchitecture: all
SourcePackage: ubuntuone-client
UpgradeStatus: No upgrade log present (probably fresh install)