The tool should display the current R being installed into from both the 'install' and 'upgrade' steps. If the default top-level registry key is missing, let the user select one of the installations, and set this version to be the correct top-level install in the registry.
The tool should display the current R being installed into from both the 'install' and 'upgrade' steps. If the default top-level registry key is missing, let the user select one of the installations, and set this version to be the correct top-level install in the registry.