I have the same problem as mentioned in this post: How do I stop Outlook from asking me to choose a profile?
But unfortunately the solution doesn't help. It was already set to this required setting and when i try to register a new profile from that dialog I get the following error:
Moreover Outlook asks me not only to choose that profile when the programme is running but when it is turned off too! Could this problem be caused by the google calendar sync? http://support.google.com/calendar/bin/answer.py?hl=en&answer=89955