Please Help! Click track shows signal but no sound.

Windows 7 + PT 10

A click track was created with the default click software plug-in.
As an option I have also created a click track using TL Metro.
Click is enabled
Metronome icon is on (blue)

The signal meter shows the click but no sound either for playback or record.

I CAN hear sound on a MIDI track. Only the click track does not work.

I TRIED with no results:

1. Re-starting
2. Deleting and creating a new click track.
3. Inserting it on the Master Track
4. TL Metro also has no sound

You help is really appreciated.

Thanks!!!