I installed Mendix Modeller 7.6.0 along with other versions on my machine. During installation I got an error message about "Version Selector prerequisite not installed properly". I subsequently uninstalled the Version selector and 7.6.0 and tried to re-install. I got the same error message during install of 7..6.0 and now I have no version selector. How can I re-install the Version Selector?