I've just purchased the special offer Terragen Professional + Animation upgrade from Terragen Professional.
Running on Mavericks Mac I dragged the newly downloaded Terragen 3 folder to my Applications folder and instructed the warning popup to replace. However when I open Terragen it doesn't ask for a key.
The animation timeline does not appear at the bottom of the Terragen screen.
Looks like I still have Terragen Professional without the Animation feature.
How do I upgrade correctly to take advantage of the animation feature?
Just worked it out. Had to go and add a key license file under Help menu.
Glad you got it sorted out. Just for future reference for everyone, replacing the key file will give you the new features immediately, no need to replace the application.