Free2Go, if you're geotagging+geoaligning a panorama from ICE, rather than a synth from the synther, you won't be able to test alignment or view them on Bing Maps until later this year. No firm release date has been announced other than "early summer" and "before July 4th".
If you're actually seeing this problem with synths instead of panoramas, then of course I am not helping with my explanation.
In your case where you say that a link to view the synth on Bing Maps fails to be generated (assuming that you are talking about synths and not panoramas) is the geotag and geoalignment data still saved if you reopen the synth editor?
How many images and what sort of a synthy score do these synths which are failing to get a "View this synth on Bing Maps" link have? There is a cutoff point where if your synth has too few images or too low a percentage that matched each other, the synth will not be displayed on Bing Maps, simply to protect Photosynth's reputation.