I am having a problem where I am creating scores with between 15 and 25 staves. When I click "extract parts," only three parts come up on the list. Never the same three, this time it was glockenspiel, snare drum, and viola. But always three. I have to go into manage parts, create new parts, name parts, add staves, save, for each part. Then it extracts when I have done that for each remaining staff. Very tedious. Anybody know something I'm missing?