itch.io

I just downloaded it since I remembered about this game from a while back and I went to newgrounds to find it but I couldn't find it even though it was the pfp of the adult games. I just thought that it went down for an update or something and didn't look for it for a little bit. I tried again and a series of events led me here downloading the game. I just downloaded the game on mac and when I try to run the game, it says "The application "EC 1.0.0 (mac)" can't be opened." Is there any way to fix this? I already unzipped the file.