In IE, try using the refresh key after the blank page comes up.
Post #7 in this thread offers a possible solution but Post #8 complains the solution did not work. - but no followup occurred.
<http://www.adobeforums.com/cgi-bin/webx?128@@no-spam>
FWIW
Ian
I'm resurrecting this issue. I still can't get it to work even running all of the registry fixes listed in this article. Basically, when disabling web browsing, instead of getting the open/save box... I get a blank browser. Are there IE settings that may be affecting this?