happen to me, I shoot with Nikon but it might be the same thing. My file transfer box stopped opening. So I went to "my computer" icon on the desktop (windows 98) clicked on that, looked for the drive that was my camera or card reader, mine was drive f, I double clicked that, saw a folder, opened that & all my photo's were there. I then copied them to another folder for storage.

Hope that might be some help, if not do you know someone with a Canon digi camera & get them to try on there personal confuser.