I was trying to build a graph and noticed I am missing part of the Rhythm’s Package. After much help from @john_pierson he informed me that the whole Package is not supported in Revit 2016 and prior. If you are having the same issue try opining 2017 or 2018 and see if it solves the problem.
Thanks John for your help and the Rhythm’s package,
What the package looks like in 2016.
What it is supposed to look like.