Open the registry editor by running regedit.exe
Navigate to HKEY_LOCAL_MACHINE\SOFTWARE\R-core\R64\3.1.3. Verify that there is a valid value for InstallPath - The default is c:\Program Files\R\R-3.1.3.
Check the Revolution Analytics entry a few lines below - open it up to see the CRAN_INSTALL_DIR. That value should match the InstallPath.
Edit the values as needed and exit the registry editor. Try the installation again.