Error when script end

Hi all

I have made a script to plot daily waveform.
When finished it give me this error:

Exception TypeError: "'NoneType' object is not callable" in <bound method WaveformPlotting.__del__ of <obspy.imaging.waveform.WaveformPlotting object at 0xacd07cc>> ignored




Hi Sergio,
probably the best way to get some answer, would be to provide a small script (or a sequence of interactive commands) reproducing this problem. Otherwise, it will be difficult to provide some useful hint.