H-game Itazura kyouaku いたずら狂悪 HELP!!!

[ChocholateIsSweet]

Recently, I downloaded this game Itazura kyouaku いたずら狂悪, when I open it, it keep telling me this

Failed to load mono
Unable to load mono library from "C:/Desktop/ItazuraK103/itazuraK_Data/Mono/mono.dll" (error = 126).


I don even understand wat is it saying.....

I downloaded from : http://www.anime-sharing.com/forum/hentai-games-38/japanese-%5B150130%5D-%5Breal%5D-%E3%81%84%E3%81%9F%E3%81%9A%E3%82%89%E7%8B%82%E6%82%AA-sexy-sailor-costume-manual-update-1-03-a-331718/

Help me pls
I'm too excited to play this game.....