Oujisama Lv1 18+ addon help

Hey, I need some help:

I just recently donwload oujisama lv1 and the 18+ addon on won't work. I try to mount the disc and I get "unable to mount image. File not accessible." I've redownloading it from a different file link, but it says the same thing. ;;;;; I'm using daemon tools to mount the image. Am I doing something wrong or are the files corrupted?

Are you trying to mount the right file? Have you try to do that with administrative privileges?