contact tech support; perhaps they can assist ...
This is a free service and you can submit a ticket here:https://support.techsmith.com/hc/en-us/requests/new
Or call, >>> 1.517.381.2300
Toll Free: 800.517.3001 (U.S. & Canada Only)
8:00 AM to 7:00 PM EST Monday through Friday
I would contact sales directly if I were you.
Contact TechSmith Sales
1.517.381.5901 • 1.888.750.0685
Hours: 8 a.m. - 7 p.m. EST, Monday-Friday If you live outside of the United States or Canada you should contact tech support.
Not trying to contradict you kayakman but I invested the time to research this out and wanted to post my findings.
Yes, you can purchase the upgrade to version 8. As long as you have a valid license for ANY previous version, you are eligible to purchase the upgrade. You can purchase the upgrade online at: http://shop.techsmith.com/store/techsm/en_US/pd/productID.289441200 or you can call the Sales Team at 888-750-0685.
Have a great day!