if your pc opens the r64 file, but it's the wrong application, you'll need to change your windows registry file association settings. in other words, windows is associating r64 file extensions with the wrong software program.
Can you repeat this sentence, but capitalize it correctly?
If your PC opens the R64 file, but it's the wrong application, you'll need to change your Windows registry file association settings. In other words, Windows is associating R64 file extensions with the wrong software program.