We have detected you are using OS X 10.7 or newer. If not, please ignore this.

To open this Desktop Edition on Apple Lion OS, and above, you will need to temporarily bypass Gatekeeper.

1. Right-click (CTRL-Click) on the Digital Edition Installer.
2. Choose Open from the context menu.
3. Click Open in the warning dialog that appears.

Why do i need to do this? This is due to Apple changing its rules on the exclusion of software vendors who do not directly sell or distribute through their channels. Please note that our editions are signed using VeriSign which works on all previous versions of Apple OS.