In Photoshop preference, I increased the amount of RAM (don't remember what I set) and now I cannot open Photoshop. It gave message "Could not initialize Photoshop because there is not enough memory." I know that there are plenty of memory in my computer. I reinstalled Photoshop and still the same problem. I search and could not find any data file that might contain the changed RAM amount. Other programs are running normal. Please help.