When I open 2- and 3- staff files I created in the previous version of Noteworthy, I only can see the first staff, but the other staves are still there because they still play. What do I need to do to see them? If I add a staff, I get a blank staff. My default page has only one staff--this may be the problem. If so, how do I change the default?
See if your Page Setup is set to show all the staves.
Your default page has nothing to do with how many staffs you will see. It is simply the default starting point for an NWC song, that's all.
As x said above, check which staffs are visible using the Contents tab in File | Page Setup.
A