To install FS2002 Reliability Factor Version 1.3 ...
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If you have an older version of FS2002 Reliability Factor installed, please uninstall it prior to running Setup.exe. If you've already registered FS2002 Reliability Factor, the Windows uninstall program should leave the registration file within the installation directory alone. Just install Version 1.3 in the directory you had the older version installed.

If you don't have FS2002 Reliability Factor installed, run Setup.exe.