There seems to be an issue with catart-mubu-poly.maxpat. When loading in sounds, the following error is produced
mubu.knn: cannot connect to MuBu container ‘corpus’
To fix this, change the argument in the [poly~ camu.voice.poly~] object to this so that it references the [mubu poly-corpus] with the correct name:
poly~ camu.voice.poly~ 10 args poly-corpus descr