Saturation No Longer Works
I have a background that I made for an image I'm working on (it's on a separate layer above the Background Layer). I've been successfully increasing the saturation using both the Hue/Saturation tool and via Camera Raw. But all of a sudden, it seems to have stopped working. Now, I've used these tools a few times on this background with success. But now, most interestingly, the saturation increases when I'm in these tools (I can see it). But when I apply the change, nothing happens.
Here's a lower res version of the background image I've created:

