Home 7 softsynth starts to play but audio cuts out after 1 second

Home 7 softsynth starts to play but audio cuts out after 1 second, the midi continues to play but there is no audio. When I freeze the track (all tracks using that synth also freeze) it mixes down and the audio works fine. This all started about a week ago, I figured I must have change some setting somewhere along the line. I can't seem to figure what I did.

Help is appreciated.