When I start a file in the key of F#, I get a key signature in the notation window consisting of 6 flats after the bass and treble clefs; in other words, I get the key signature for Gb instead of F#.

When I start a file in the key of C#, I get a key signature in the notation window of 7 flats after the bass and treble clefs; in other words, I get the key signature for Db instead of C#.

What do you get?

When I used to use Power Tracks version 6, selecting the key of F# would put a regular F# key signature after the clefs; that is, 6 sharps, and selecting C# would give me a key signature with 7 sharps.