variaudio problem

Hi Forum,
I have version 5 and when I try to use Variaudio I can’t see a pitch value for the segment. I double click on the track part, click on Pitch and Warp, but no indication of pitch is present ie by how much the note is out. I managed it before and that track still has the pitch accuracy percentage, but on all others it doesn’t show. The Pitch Active light above Pitch and Warp doesn’t come on either. Segments can be moved but I can’t correct the vocal track without this function. Why has this stopped working? Thanks, Barry.