The plugin still relies on the Photosynth app for Windows being installed for the uploading to your Photosynth account. I'm not sure if that would be affecting you or not.
... I took a look at your profile and this pano does appear to come from the plugin: http://photosynth.net/view.aspx?cid=9021afcb-c5c5-43bb-9273-07e60d6c3201
Did you get this problem resolved?
Also, just for your information, the 'Announcements' forum is meant to be for the Photosynth team to make announcements to us - not for Photosynth members to make announcements. It's not a huge deal, but this discussion might belong better in the 'Bugs' forum or the 'Advice and Critiques' forum.
Eager to see this resolved for you,
Your fellow photosynther, N