User blog comment:Zepekinio25/Monster Girl Quest : Servant of the monster lord/@comment-71.123.243.244-20140616021734/@comment-31081547-20140617095249

From there i can only think at one thing.

You didn't merge the nscript.dat of MGQ : SML with the MGQ folder, and if you really did, then i am comletely lost, when you merge the nscript.dat from the .rar file with the one of MGQ, it modify the code, and so, good bye old MGQ. If you still get the original game even when  you do that....I can't help you, please wait for the full-game version if that's so...