The Meaning of Life, the Universe, and Everything.
Install Works With Windows & Mac, if your on windows extract the same zip folder in the root minecraft directory.
I have always had problems with flans mod with my mac, I finally created an easy way to get flans mod. All you have to do is extract this zip file and overwrite the files in your minecraft directory.
1.) Download the zip file.
2.) Click go to folder in finder and type this in /users/YOURUSERNAMEHERE/library/Application Support/minecraft
3.) Copy, extract, and overwrite the files in that directory with the zip folder I provided you.
4.) Enjoy flans mod.