Check the output of your soundcard. If everything is sending and receiving MIDI correctly, you should hear the choirs. In some situations, if you modify the settings of a sequencer, the Kompakt player will reload all the samples that were previously in it. In sequencers like Digital Performer, you simply need to create another instrument track, and instantiate it with Symphonic Choirs.

Other things to check:
* Is the multi loaded a WordBuilder multi?
* Is the bypass button checked in WordBuilder? If so, un-check it.
* Any muted channels in the Kompakt player?
* Range of mutli templates WordBuilder. Make sure your midi data is between thedesignated range of the multi.