I received the error message when trying to activate Robot 2012.
It is a stand alone license, and when I tried to activate I received the error 123 message.
I "click" https://resgister.autodesk.com and received the following message:
"Thank you for registering your Autodesk product. The
information you provide helps us serve you better in the future and helps you
stay informed about Autodesk products and services.
This product does not require activation and is
ready for use"
But it is still in trial mode.
Thanks
Gustavo
