I have FrameMaker10. It was installed and working on a Windows7 plateform. Then, several months after installing it and using it, when I tried opening it, it just gave me a little message that says the license for this product has expired.

I have FrameMaker10.  It was installed and working on a Windows7 plateform.  Then, several months after installing it and using it, when I tried opening it, it just gave me a little message that says the license for this product has expired. I thought that once you purchased the product it was good for life?  I even tried installing it on a new Windows7 machine but get the same result.  Can anyone out there help me with this?  Does a FrameMaker10 license expire?  If so, how do I get an upgrade?