So I've set up an in-game graphics options menu for my game, but the Anisotropic and texture quality settings aren't being saved.

If the default is QualitySettings.masterTextureLimit=0 and QualitySettings.anisotropicFiltering=AnisotropicFilter.ForceEnable, and then I run this code:

QualitySettings.masterTextureLimit=1;
QualitySettings.anisotropicFiltering=AnisotropicFiltering.Disable;
Application.LoadLevel(Application.loadedLevelName);

...The settings are back to the defaults after reloading the level (checked by debug messages). To make it even stranger, altering QualitySettings.antiAliasing works just fine. Note that to test this, I always build out to the stand alone. So what's going on here?