Hi rpaynter,
That would be a question for the developer of that plug-in. The Vimeo link you have shared has a contact option.
I haven’t checked it, but the main change since he posted it was that Cinema 4D went from Python 2 to Python 3. Sometimes it works to run scripts through a converter that some people offer online. No Guarantee!
Besides that, around a decade+ ago, Bret posted this rig. Perhaps it holds enough information to create an S26 version of it.
https://www.cineversity.com/vidplaytut/making_an_ocean_wave_rig_in_cinema_4d_-_part_1
All the best