$ python fs2-gui.py
Traceback (most recent call last):
  File "fs2-gui.py", line 700, in new_server
    self.action(SERVER)
  File "fs2-gui.py", line 684, in action
    self.ui = FsMainUI(mode, ip, port)
  File "fs2-gui.py", line 587, in __init__
    self.pipeline = FsUIPipeline()
  File "fs2-gui.py", line 111, in __init__
    self.videosession = FsUISession(self.conf, self.videosource)
  File "fs2-gui.py", line 325, in __init__
    self.sourcepad = self.source.get_src_pad()
  File "fs2-gui.py", line 225, in get_src_pad
    queue.set_properties("leaky", 2,
AttributeError: '__main__.GstQueue' object has no attribute 'set_properties'