PlayerPrefs don't load again after Android game closes for the first time.

I'm having a problem with PlayerPrefs in my android game. I have no problem when I save and go to the menu, and they load fine if I go back to the game from the menu. But if I quit the game entirely, and then start it up again, the PlayerPrefs are not loaded and the game starts off as if there is no saved data. I would appreciate any help. I can post the code I'm using if it will help solve the problem.