Does /Application/Utilities/Console.app show you anything?
Opening it up, clear it, and repeat your steps, then paste whatever you get new into a reply here.
I don’t use Vizzable, nor did we make Syphon out for it. You might be better off contacting whoever did make it.
Im 90+% sure you need to install the Syphon Plugin for Max so it works. If you don’t, the Max patch will still load, it just won’t ‘run’ the Syphon output, resulting in the behavior you are seeing.