Drag&drop doesn't work

Ubuntu 13.04, Pygtk 2.24.0-3ubuntu1. Drag&Drop doesn't work.
parts of code:

self.window.connect("drag_data_received", self.getDrop)
self.window.connect("drag_drop", self.drop_cb)
self.window.drag_dest_set(0, [], 0)
self.window.connect("drag_motion", self.motion_cb)

def getDrop(self, winID, context, x, y, data, info, time):
 self.filechooser.set_uri((data.data).strip())
 context.finish(True, False, time)

def drop_cb(self,wid, context, x, y, time):
 wid.drag_get_data(context, context.targets[0], time)
 context.finish(True, False, time)
 return True

def motion_cb(self,wid, context, x, y, time):
 context.drag_status(gtk.gdk.ACTION_COPY, time)
 return True

On previous version this code worked ok!