Make sure that you have the latest version of the emWave program.
Open the emWave program, click Help and Check for Updates.
Or go to www.heartmath.com/downloads to install it.
Use the same Registration number that you already have if you are downloading emWave Pro. emWave2 does not require a Registration number.
It's also possible that you may need an updated video driver in order for the games to work. We urge you to back up your computer prior to installing any system software updates. Go to your computer vendor's Web site and download and install the latest video driver for your model of computer.