Comment 1 for bug 475390

This is not a bug in the sabnzbdplus package. The incompatibility is between various releases of cherrypy whose authors didn't bother either ensure backward compatibility or properly naming their incompatible products to not occupy the same spot in python namespace. The relevant Ubuntu packages (python-cherrypy*) have appropriate conflicts in place.

Sabnzbd+ is being ported to cherrypy3 in a future release out soonish; for now, you'll have to drop the conflicting package(s) or use the source release available from the project website.