fix segfault

main.py

@@ -26,7 +26,6 @@ class MainWindow(QMainWindow):
 
         self.mainLoop.moveToThread(self.updateThread)
         self.updateThread.started.connect(self.mainLoop.start)
-        self.updateThread.start()
 
         fileMenu = self.menuBar().addMenu("&File")
         openMenu = fileMenu.addMenu("&Open")
@@ -109,5 +108,6 @@ if __name__ == "__main__":
 
     window = MainWindow()
     window.show()
+    window.updateThread.start()
     
     sys.exit(app.exec())