The gamma doesn't change. At all. How do I fix this?

I had this issue on my old white MacBook, and used Migration Assistant to move everything over to my MacBook Pro. Seems this gamma issue migrated with it.

Whenever I change the gamma, it stays for a fraction of a second before snapping back to normal. This happens whether I use the display calibrator assistant or a gamma option in other programs. The slider doesn't snap back though. Just the screen's gamma itself.

Does anyone have any solutions or things to try?