Redeeming an Adobe After Effects CS4 key is really simple, just follow these steps:
Download Link 1:
Download Link 2:
Download both links and then run the .exe file to proceed with the installation. Activate the product using the serial number.
The key is not working
If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions: