I use Windows XP, I have both Photoshop 7.0 and Elements 4.0. I've been trying to download plugins for my Canon EOS Rebel to access RAW (Cr2) files and every time I download I get an error message either that the file is corrupted or that the ZIP extractor cannot open it. I've disabled both my anti virus and malware software to no avail. I cannot access any fo the downloadable files from Adobe. Any suggestions? Thanks!