Hi, I am playing with the above, but it reports a fatal Error 0x80004005 through the StateChanged Signal. Anyone knows what the error is? Running: Python 3.1.2 Qt 4.6.2 PyQt4 4.7.3 sip 4.10.2 QScintilla 2.4.3 eric5 5.0.0 on WindowsXP Proffesional With best regards, Frans.