How to call viz.go() from a GUI

[Thummi]

Hey,

currently i am working on the GUI for a project and i got stuck on a stupid problem.
If i try to call viz.go() via a button it does not work as it should. I get stuck in the loading animation


If i call viz.go() in an otherwise empty script it works as it should.

I created the GUI with pyQT and qt Designer and the button is connected to a method which calls the method of an other object, which contains the viz.go() call.

	def __init__(self):
		super(MainWindow, self).__init__()
		uic.loadUi('ballconfig.ui', self)
		self.application = Application.application()
		self.show()

		.....
		
		#Connect the buttons.
....
		self.start_Button.clicked.connect(self.onStartSimulation)
.....

def onStartSimulation(self):

	self.application.start()

def start(self):
		#Video settings
		#viz.setMultiSample(4)
		#viz.fov(110)

		viz.go()
                '''
                 rest
                '''

That is the way the code looks like currently. I currently don't have the slightest clue why it does not work. Did i forget anything(i hope) or is this a known issue(i hope not) ?