if 6 is installed 5 won't show up
if I uninstall 6 in SDC then I get a choice of 4, 5 or 6
visit the
Support Page and:
Enter the email address you ordered under originally, or you created your Stardock.net account with, to receive an email with the serial numbers and download links for the Stardock products you have previously ordered.
and then archive it