I need to use the features of the Summa package but it doesn't work in Mathematica 9. It gives the error
Cannot open Utilities`FilterOptions`
My question is:
Is there an alternative (more modern) package with similar features, or a way to make
Summa.m work in Mathematica 9?
Following @Nasser I solved it. The problem was that the input of
FilterRules is in opposite order, e.g.
is changed to