Hi,
A couple of items here might be of help:
1. Make sure that if you've made changes to .not files, that it is indeed the .not file and not the original .mid file that the Playlist is referencing. For myself, I create a separate folder and put any edited .not files in it that I want to use in a Playlist. This practice should help eliminate any confusion (although Notation products look for the .not version of a file before the .mid version) and make sure that it's using the edited version.
2. If you use the Mute button on a staff, that is only for a given session. If you close the file and re-open it, that staff won't be muted. To "turn off" notes but still see them, be sure the Note Velocities are zero for those notes. Also, if you're using found .mid files to start with, check for duplicate tracks that are also playing the same notes and either set those to zero velocity, or delete the staff altogether.
3. The only time I've seen font issues like you describe was when I set up files on one computer, then tried to use them on another machine that didn't have the same fonts. The substitutions that the second machine made didn't match up exactly, and the fonts and sizes didn't look like I had wanted them. If you're prepping the files on a different machine, try prepping them on the performance machine before accessing them via the Playlist.
If there are particular files that are having issues consistently, please attach a copy to a reply either here or to our support desk at
support@notation.com
ttfn,
Sherry