Hi Taifun and all,
I used the qr.aia (from puravida) to create a apk, then installed it on an tablet.
I got the error: file://mnt/sdcard/AppInventor/assets/qr.html could not be load
net::ERR_FILE_NOT_FOUND
It works on other devices.
The tablet has Android 5.1.1.
Is it to old? Can I do other to make it work on it?
Horst