I remember having some troubles with the suggested temp fix, but don’t remember exactly, what those were. I got it working eventually though. Possibly it doesn’t let you have period characters in the DLC/Plugin name, maybe you could try renaming to DLC1 for now?
EDIT: I also initially placed my plugin into ‘ProjectDir/Plugins/Android’ folder, to later find out, that folders with platform name are stripped out of the project during packaging, so I had to move it into ‘ProjectDir/Plugins’
EDIT2: Actually, since all of the above might well be irrelevant, could you post a build log after creating a blank plugin, and verify, that there actually is a blank plugin in your Plugins dir? The directory structure should look something like this:
