Wores well in 10.10 but not in Yosemite 10.10.1

Something needs to be updated. Today I downloaded Yosemte 10.10.1. Yes this is beta. But it doesnot seem to scan.
Since this beta has a note “WiFi focus” I suspect something inYosemite changed.
Once this is resolved, I will be a useful tool once more.

Fabf2 about WiFi Scanner, v2.5