Hello,
If you've preveiously saved any of your sessions on your computer then chances are they are still saved somewhere. Updating Monkey would not have erased your sessions. That's not the way it works.
Try searching your computer by session name and see if they come up.
Now, you mentioned you updated Monkey. Is that the only thing you updated? I'm asking because if you were using Riffworks 1 and accidentally updated to Riffworks 2 then yes, your version will be running in Demo mode as RW2 is a paid upgrade.
Can you verify for me if you currently have RW1 or RW2 installed on your machine?
Also, can you tell me what kind of computer you are running on? OS?
Thanks.
Line6Miller