You might've come across some patch being spread all over the web for this final update, if so you must've noticed that that method can't get all functions of the program to work correctly. Here's the new proper key that's going to help you sort this out. Have fun!
Action! - Record everything!
Action! allows real-time recording/capture of Windows Aero desktop in a superb HD video quality. With Action! you can record web player videos, your gameplay, display game framerates, add live audio commentary to create high quality tutorials, record music, capture screenshots... and more!
What's new in Mirillis Action! 1.7.0
NEW FEATURE: Windows 8 desktop recording added! Enjoy the world's best Windows 8 screen recording performance!
Cursor recording fixed in some games and applications (i.e. Adobe Photoshop, League of Legends)
30p and lower fps gameplay recording improvements
Capture screenshot improvements for multi-display setups
Small GUI improvements
Before using the key to register the app, make sure you block app's components from accesing to the web. You can use your favorite firewall to do this step. Then just insert the key to register the application. Enjoy the program!