Export range error -- first one always hangs

[varpa]

Here is an error I get very reliably on Mixbus 3.0.2257 on kxstudio 14.04. Import stereo track; make a range; right-click on range limit box and select "Export range..."; export range box will appear; if you select "Export" export will momentarily start and then hang. Mixbus must be killed and restarted after which exports will work without problems. I've learned to save before doing any exports, so no work is lost.