We just tested Goldenseal with the public beta of Mac OS 10.11 (El Capitan), and were pleased to find that everything runs fine.
There were a couple of very small cosmetic problems, but they are probably just “beta” issues in the OS itself. If not, we can tidy them up after the main release this Fall.
Meanwhile, our Goldenseal Pro contractor is still working on the breakdown tables. They are probably the most complicated part of our interface.