After downloading the Exposure X3 installer you get a message saying:
Windows protected your PC
This is happening because Alien Skin Software has recently renewed its code signing certificate. Windows does not yet recognize the certificate as widely trusted. The product is safe and you can continue the installation. These steps will allow you to safely install Exposure X3.
1: Download Exposure X3 from the Alien Skin Downloads page.
2: Open the installer.
3: You may get this message: Windows Protected your PC.
4: Select More Info.
5: Select Run anyway.
6: The installer will open. Follow the prompts to complete the installation.