node_manager_fkie: fixed warning dialog in rqt
@@ -34,7 +34,7 @@ class NodeManager(Plugin):
self._widget = MainWindow()
# self._widget.read_view_history()
except Exception, e:
- MessageBox.critical(self, "Node Manager", utf8(e))
+ MessageBox.critical(None, "Node Manager", utf8(e))
raise
# Get path to UI file which is a sibling of this file
# in this example the .ui and .py file are in the same folder
