I just got the upgrade from Freelance 6 to 6.5 and though my dongle is properly installed and working well (recognized by Workbench as having the proper licence for Freelance 6 components), the migration file I was sent by email does't detect any dongle.
The migration program is usually set for one or more specific license numbers (click on Show Licences to display it/them) - if there is a mismatch between the license number of your dongle (go to Help - About in Workbench or click on Check Dongle in the migration program) to check the license number) and the license programmed in the migration program, it won't be possible to upgrade.
I've written to Trados but as I don't have any record of diligence on their part (as opposed to SDLX, say), I'm appealing to anyone who might have an idea as to how to solve this problem.
I don't think anyone else but Trados Support will be able to help you here - did you respond to the address shown in the message to which the migration program was attached?
Best regards, Ralf