I paid and received a key for Registry Medic 5 but the key was for an old 4 version that was no longer available. Despite emails for help over several months, there has been no response. So, I've lost my $US30 and am pissed off. Beware, both Registry Medic and their billing company do not reply to any emails and you may lose you money like I have. I do not like publishing comments like this but, after many months of trying, have so other option.