I've been programming some Kivy/Python apps on my Motorola Moto G mobile phone.
I've got a few handy little apps, that have been working OK for a few months.
Today, I launched one of the apps - through the QPython interface, and it didn't work.
So, I tried another of my apps and that failed to launch for the same reason. In fact, all of them fail to launch for the same reason.
The error shown on screen ends with:

File "/QPython/core/build/python-install/lib/python2.7/UserDict.py", line 23, in getitem
KeyError: 'ANDROID_APP_PATH'

I presume that something on the phone has taken an upgrade - and broken something.
I assume that is the case because this problem affects all of the Kivy apps I was using.
Anyone else encountered this?
You need to have
#qpy:kivy
part in the first line.
At least that was what happened to me.
I suppose that is because QPython is finding what type of app is it.
KeyError: 'ANDROID_APP_PATH'