[palosanto]

Being able to browse with windows explorer is very different from the connection required for ADB. One is using a protocol (most likely MTP) that allows only for file transfers over USB. The other sends raw data over USB which is normally blocked on Android as it's considered a security loophole. So being able to connect over USB doesn't really tell you if ADB will work. Try bringing up a command prompt window, and then enter the following commands:

Code:

cd "C:\Program Files (x86)\Zubersoft\MobileSheetsProCompanion\tools"
adb start-server
adb devices

Let me know if your device shows up in the list.

Mike,
The device showed up at first as 'unauthorized' but I accepted the authorization prompt on the device and the second time that I issued the command it accepted it.
So I guess that was the problem.
MS Companion works ok now.  Thanks so much.