Therefore ApkBuilder 257 was dropped into “Plugins”.
When DS is run, it says Plugin is installed.
But attempt to build Apk says ApkBuilder is required.
Is the issue with the new DS, or the ApkBuilder ?
Restarting didn't work, but tried “Build Apk” 4 or 5 times and eventually it worked !
Maybe it just takes some time (~20s?) to work?
Thanks for your help.