No Sound in Dorico 4.2 on a MacBook pro running 11.6.7

Hi all, I have Installed Dorico 4.2 3 times so far and there is no sound on playback on new or old scores. I used the download installer. Sibelius plays back as does Audacity and the Music app.
Dorico (652.8 KB)

Once re-install is enough to rule out the installation.

What do you have selected in Edit > Device Setup?

Thank you, the device Control panel did not have the Ouput ticked, it does now and sounds have turned up! Why doesn’t this happen automatically? I have been frustrated for days, Thank you, Cheers, Mark