Do you have the same issue running the following code?
Code:
import viz
import vizinfo
viz.go()
info = vizinfo.add( 'Where do you\n have to go?' )
info.bgcolor(viz.BLACK,1.0)
info.translate( [.98, .905] )
button1 = info.add( viz.RADIO,0,'straight')
button2 = info.add( viz.RADIO,0,'left')
button3 = info.add( viz.RADIO,0,'up')
button4 = info.add( viz.RADIO,0,'down')
button5 = info.add( viz.RADIO,0,'right')
button6 = info.add( viz.BUTTON_LABEL, 'Next')
Since the same code works on another machine it seems GPU/driver related. Try changing the performance settings mentioned in
this article. You could also try rolling back the drivers to see if that makes a difference.