do you have multiple instaces of B4A open?
if so, close all of them exept the one you work in as it might lock ports.
Are the Android sdk tools correctly installed?
I remember reading someone having problem locating the SDK tools folder as that had changed...
In the log we can see that the ADB failed to start, try starting in manually...
Btw, I too changed from 8.1 to 10, no issues there!