@anonymous_user_f5a50610 - Nope, Blueprint only project, with only three files.
The reason I’m using DXT Compression is because we’re using nVidia Shield, and eventually we’re going to switch to the Desktop Renderer. Coming from Desktop development this just seemed like the right option 
I’m sure I installed the Android SDK as the steps told me to, but I’ll check again. I think I grabbed the latest SDK at the time (whatever that was). I’ll try re-installing based on the thread you just linked. All I know is, I just want to be able to deploy to nVidia Shield - and only that device. I’m not very savvy when it comes to Mobile/Android dev… seems like nightmare work.
I just tried packaging for ETC1 - same error again.