For some reason I can't open photoshop anymore, when I do I get a blank grey screen with just the menu on top that I can't activate & a flickering bar. So I removed & reinstalled the software and when I tried to open again I got that message: "you currently have Adobe Photoshops primary scratch and windows primary paging file on the same volume, which can result in reduced performance. It is recommended that you set adobe photoshop's primary scratch volume to be on a different volume, preferably on a different physical drive." Anybody knows what that means or what I am suppose to do?