Yes I did use my old Camtasia 3, and manage to get the .swf file size down to 29 mb. The QT H.264 export failed, so I used Mpeg4. The Mpeg4 was around 10MB and the H.264 would be even smaller.
In the future I wil try to put up a download page of MoI videos, like I did for Modo http://homepage.mac.com/janoverust/FileSharing26.html