Well that's just odd, What operating system are you running?
General ideas would be to uninstall TrackIR, Install, reinstall, or update Microsoft VC2005 runtimes (x86 and x64) including the Visual C 2005 Runtime with the ATL update, then fully update windows and re-install TrackIR 5.1.3 by downloading it, then navigating to the installer, right clicking, and selecting "Run as administrator".