I used Firefox all morning and it was working fine. This afternoon we lost our electricity and now when I try to open Firefox I get a message saying "The verision of this file is not compatible with the version of windows you're running. Check the computer's system information to see whether you need an x86 (32-bit) or x64 (64-bit) version of the program and then contact the software publisher." I have no idea what this means. I'm not to great with computers so any help or advice would be greatly appreciated. I do know I am using Windows 7