Photoshop :: Pink Background In PS3

I open a photoshop file, I get a pink background covering parts of the canvas that otherwise would be white (or some other color) due to a solid color layer being used as the background layer (or rather, the bottom most layer). I've never had this problem before and have been using the same copy of photoshop for months. I haven't changed any settings, but nonetheless held down ctrl+alt+shift and apparently deleted the settings file in hopes if fixing this problem. but, i'm still getting the pink background. it's a quick fix to redo a solid color layer or even to delete the pink background (although it doesn't even belong to a certain layer.. i am just able to magic wand it and delete) but whenever i open the file, the pink background reappears.