Preferences dialog hangs after exception

[NeilGreenwood]

Binary package hint: ubuntuone-client-gnome

U1 preferences dialog hangs after opening.
I ran it in the terminal and saw the following exception:
$ ubuntuone-preferences
Exception in thread Thread-4:
Traceback (most recent call last):
  File "/usr/lib/python2.6/threading.py", line 532, in __bootstrap_inner
    self.run()
  File "/usr/lib/python2.6/threading.py", line 484, in run
    self.__target(*self.__args, **self.__kwargs)
  File "/usr/bin/ubuntuone-preferences", line 162, in do_rest_request
    callback(result)
  File "/usr/bin/ubuntuone-preferences", line 348, in parse_devices
    self.error(error)
  File "/usr/bin/ubuntuone-preferences", line 304, in error
    gtk.DIALOG_DESTROY_WITH_PARENT | gtk.MODAL,
AttributeError: 'module' object has no attribute 'MODAL'

^CTerminated

After this, the dialog is totally unresponsive. I managed to use xkill to close the window, but still had to kill the ubuntuone-preferences process to get the terminal to respond again.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: ubuntuone-client-gnome 1.2.1-0ubuntu1
ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-21-generic i686
Architecture: i386
Date: Wed Apr 28 10:50:37 2010
EcryptfsInUse: Yes
ProcEnviron:
 PATH=(custom, user)
 LANG=en_GB.utf8
 SHELL=/bin/bash
SourcePackage: ubuntuone-client
UbuntuOneClientConfig:
 [ubuntuone]
 connected = True
 connect = 0
 show_applet = 1
 bookmarked = True
UbuntuOneSyncdaemonExceptionsLog:

UbuntuOneUserSyncdaemonConfig:
 [bandwidth_throttling]
 read_limit = 2097152
 write_limit = 2097152
 on = False

[NeilGreenwood (neil-greenwood)]

I've just checked - I had U1 PPAs enabled in the past, but they're still disabled after the distupgrade to 10.04.