Computer Requirements

Windows	A Windows XP or Vista or Windows 7 computer (32-bit and 64-bit) with 4 GB of RAM and Adobe Photoshop CS3-CS4 or Adobe Photoshop Elements 6-7. 2GB of RAM is the minimum requirement. Lucis Pro works better in Photoshop CS4 than CS3 because of some improvements in CS4 with respect to managing memory. It works best in the 64-bit version of Photoshop CS4.
Macintosh	Intel Macintosh computer with OS 10.5 or higher (including Snow Leopard) and with 4 GB of RAM and Adobe Photoshop CS3-CS4 or Adobe Photoshop Elements 6-7. 2GB of RAM is the minimum requirement. Lucis Pro works better in CS4 than CS3 because of some improvements in CS4 with respect to managing memory.