It seems after version 3.1 or so this tool no longer works. It’s incredible useful and I’m disheartened by the fact it doesn’t function anymore. Would love it if the original author bleego or someone else could get this working. It’s above my programming knowledge, which is pretty much none. HAHA
Have you try this one ? Pattern Split Plus | Renoise
It should run with 3.1 as far i know.
happy tracking 
I had tried that. Definitely doesn’t work with 3.4.