Hi Ian,

Try what Mac and av84fun said. If I understand the processing correctly, the chord builder does not use the VST/DXi but playing the chord that the Chord Builder places on the Chordsheet does use the VST/DXi. So the fact that you get no sound with VST/DXi unchecked means that currently selected driver is not working or the volume is turned down on it. I noticed from your screen shot that you also have a Creative SW Synth installed...you might want to select that one to see what happens...