Wavelab 8 could not get signal from Cl1 to computer

Was asked by my daughter to record a concert last weekend. I haven’t had occasion to do a live recording for some time, but none of my equipment or software has changed.
Found that I could not get the signal from the Cl1 to show up on the level meters in WL8.
Fortunately, I still have WL6 installed, and it worked fine.
I honestly tried everything thing I could think of, but nothing worked.
I would think that setting the record source to the Cl1 should be all I need do.
Suggestions would be appreciated.

BTW, the recording turned out just fine.