Traceback (most recent call last):
  File "/usr/share/screen-resolution-extra/policyui.py", line 190, in on_button1_clicked
    status = self.conf.setVirtual(self.resolution)
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 68, in __call__
    return self._proxy_method(*args, **keywords)
  File "/var/lib/python-support/python2.5/dbus/proxies.py", line 140, in __call__
    **keywords)
  File "/var/lib/python-support/python2.5/dbus/connection.py", line 607, in call_blocking
    message, timeout)
DBusException: org.freedesktop.DBus.Python.TypeError: Traceback (most recent call last):
  File "/var/lib/python-support/python2.5/dbus/service.py", line 696, in _message_cb
    retval = candidate_method(self, *args, **keywords)
  File "/usr/share/screen-resolution-extra/screenresolution-mechanism.py", line 259, in setVirtual
    backup = source + time.time()
TypeError: cannot concatenate 'str' and 'float' objects