I was the same error. But this error occors when there was no internet service.
I made some tests turn off my network connection and call Qlik Sense. QS doenst start and result the message that you describre. When I turn on my network connection and started QS started with no error.
I´m running QS 3.0 ci-ms17-06-destopsuite:3.0.0-20160620113617