Please ship RELEASE-NOTES in source archives.

(Current 'winswitch-0.12.14.src.tar.bz2' do not have 'RELEASE-NOTES' file.)

As originally reported ​here on the mailing list, here is the backtrace obtained with abrt.

Note: contrary to the report above, when I test this only happens on KDE, and only when using "auto-start".

abrt_version:   2.0.10
cmdline:        /usr/bin/python /usr/bin/winswitch_applet --open_server_config=
executable:     /usr/bin/winswitch_applet
kernel:         3.5.2-1.fc17.x86_64
time:           Wed 29 Aug 2012 11:30:08 PM ICT
uid:            1000
username:       fedora

backtrace:
:warnings.py:29:_show_warning:ValueError: I/O operation on closed file
:
:Traceback (most recent call last):
:  File "/usr/lib/python2.7/site-packages/winswitch/client/client_base.py", line 744, in server_dir_changed
:    self.slog("evt_type=%s" % type(evt_type), monitor, d, ignored, evt_type)
:  File "/usr/lib/python2.7/site-packages/winswitch/util/simple_logger.py", line 317, in slog
:    self._write(self.log_colour, "II", self.prefix, msgsig(msg, *args))
:  File "/usr/lib/python2.7/site-packages/winswitch/util/simple_logger.py", line 231, in msgsig
:    s = msig(*args)
:  File "/usr/lib/python2.7/site-packages/winswitch/util/simple_logger.py", line 214, in msig
:    return	"("+(','.join([str(v) for v in args]))+")"
:  File "/usr/lib64/python2.7/warnings.py", line 29, in _show_warning
:    file.write(formatwarning(message, category, filename, lineno, line))
:ValueError: I/O operation on closed file
:
:Local variables in innermost frame:
:category: <class 'gobject.Warning'>
:filename: '/usr/lib64/python2.7/site-packages/twisted/internet/gtk2reactor.py'
:lineno: 277
:file: <closed file '/home/fedora/.winswitch/client/applet.log', mode 'a' at 0x7fdde6333f60>
:line: None
:message: Warning("g_object_set_qdata: assertion `G_IS_OBJECT (object)' failed",)

I use these versions:

[eric@pc ~]$ pacman -Q winswitch
winswitch 0.12.16-1
[eric@pc ~]$ pacman -Q xpra-winswitch
xpra-winswitch 0.6.0-1

And here are the errors... I can't really distinguish between 'serious' errors , and 'non-important' errors

I can do some more tests, just tell me...

[eric@pc ~]$ winswitch_client 
[DD] 2012/21/09 01:33:01 main_loop.loop_init(False)
[II] 2012/21/09 01:33:01 main_loop.loop_init(False) twisted version 12.1.0
[II] 2012/21/09 01:33:01 globals os.uname=('Linux', 'pc', '3.5.3-1-ARCH', '#1 SMP PREEMPT Sun Aug 26 09:14:51 CEST 2012', 'x86_64')
[II] 2012/21/09 01:33:01 globals python package info: __version__=0.12.16
[II] 2012/21/09 01:33:01 globals version=0.12.16 (svn revision unknown - unknown local modifications), built on pc by eric, 2012-09-21, release_build=True
[II] 2012/21/09 01:33:01 globals uid=1000, username=eric, name=eric, hostname=pc, locale=en_US, argv=[/usr/bin/winswitch_client]
[II] 2012/21/09 01:33:01 globals Python version 2.7.3 (default, Apr 24 2012, 00:00:54) [GCC 4.7.0 20120414 (prerelease)]

** (process:20193): WARNING **: Trying to register gtype 'GMountMountFlags' as enum when in fact it is of type 'GFlags'

** (process:20193): WARNING **: Trying to register gtype 'GDriveStartFlags' as enum when in fact it is of type 'GFlags'

** (process:20193): WARNING **: Trying to register gtype 'GSocketMsgFlags' as enum when in fact it is of type 'GFlags'
[II] 2012/21/09 01:33:01 process_util.<module>() using twisted ProcessProtocol=winswitch.twisted.HiddenSpawnedProcess.HiddenSpawnedProcess
[EE] 2012/21/09 01:33:01 distro_packaging_util.get_distro_helper() failed to load dbus packagekit: org.freedesktop.DBus.Error.ServiceUnknown: The name org.freedesktop.PackageKit was not provided by any .service files
Traceback (most recent call last):
  File "/usr/bin/winswitch_client", line 5, in <module>
    winswitch.client.client_wrapper.main()
  File "/usr/lib/python2.7/site-packages/winswitch/client/client_wrapper.py", line 52, in main
    from winswitch.client.client import main
  File "/usr/lib/python2.7/site-packages/winswitch/client/client.py", line 14, in <module>
    from winswitch.client.client_base import ClientBase
  File "/usr/lib/python2.7/site-packages/winswitch/client/client_base.py", line 28, in <module>
    from winswitch.objects.server_config import ServerConfig
  File "/usr/lib/python2.7/site-packages/winswitch/objects/server_config.py", line 14, in <module>
    from winswitch.objects.server_base import ServerBase
  File "/usr/lib/python2.7/site-packages/winswitch/objects/server_base.py", line 27, in <module>
    from winswitch.util.commands_util import SEAMLESSRDP_COMMAND
  File "/usr/lib/python2.7/site-packages/winswitch/util/commands_util.py", line 70, in <module>
    dh = get_distro_helper()
  File "/usr/lib/python2.7/site-packages/winswitch/util/distro_packaging_util.py", line 141, in get_distro_helper
    installer(XPRA_TYPE, "xpra")
TypeError: 'NoneType' object is not callable