From the Magic Bullet website here:
https://www.redgiantsoftware.com/products/categories/color-correction/magic-bullet-looks/compatibility/
“Like Apple Motion, Magic Bullet Looks requires specific graphics card capabilities to run. Without the correct card, the software will not install or run, and the installer will warn you if you don’t have the necessary graphics card installed in your system.
Magic Bullet Looks supports a wide range of cards from both ATI or NVIDIA. For ATI cards, we require a 9600 XT or greater, or an X series card starting with the X700 series. Cards with greater model numbers and at least 128 MB of RAM can run the Looks engine.
For NVIDIA cards, we support the 6600 model and higher or QuadroFX 1300 and up. Cards with higher model numbers and a minimum of 128 MB of RAM can run Looks. For users working with HD images, we require that the video card have at least 256 MB of RAM. In all cases, we suggest using the latest video drivers for your graphics card.
Please Note Since all media is processed at 32 bit, you will absolutely need a 256 MB graphics card or larger. For newer cards from ATI and NVIDIA, we recommend a minimum of 320 MB of RAM. For 2K projects, we recommend 512 MB or a larger amount of RAM on the graphics card.”