Thanks Bojan,
Yes, CDC is reliable although the display in the later versions seems a clunky these days, takes for ever to update when you slew the display. Mouse control is a waste of time too.
I checked SkySafari Plus on my Nexus 7 for the occultation; confirmed the time of 23:32.
It would appear to be a problem with the Stellarium ephemeris data for Jupiter.
Cheers
Chris