This software uses a certification mechanism to unlock it's binaries. If you install the software on your server, you should read this section.
It uses encryption, that is, you need a key to unlock an binary. Each key depends on your server configuration. In order not to see the certification message on the bottom of each generated page, you must do the following:
Pay for a license.
Generate your server certificate from the Online Management or by following the uncertified binary links.
Fill-in and post the Certification Request Form at http://www.vestris.com/alkaline/certify.html .
You will receive the unlock key via e-mail, use the Online Management to unlock your binary.