I have numerous JPG Files on my PC. Trouble is when I access the folders they are stored in, it says - "Could not open file because the file is locked. Use the File Manager to turn off the Read-Only option." I turn off the Read - Only option in the properties section but it stays the same and cant view the picture. I have a feeling that in the past I locked the files as an experiment. Now I cant remember what I used to do it with. Is there a way of gaining access again to these files?