Mac OS X:

10.7.5

10.8.5

10.9.5

10.10

Mac Intel

1GB of RAM

30MB of Hard Drive Space

Windows:

Windows XP

Windows Vista

Windows 7 (32-bit)

Windows 7 (64-bit)

Pentium 4 2.4 GHz or faster (or AMD equivalent)
1 GB of RAM
30 MB of Hard Drive space

Host Requirements:

Adobe Photoshop CS4
Adobe Photoshop CS5
Adobe Photoshop CS5.5
Adobe Photoshop CS6
Adobe Photoshop CC
Adobe Photoshop CC 2014
Adobe Light Room 3
Adobe Light Room 4
Apple Aperture 3

Since Magic Bullet Photolooks is no longer updated/maintained, if it's running a host or operating system outside of these specifications, the program will not be guaranteed to work as it's technically in an unsupported environment.