Failing to install Android ES31+AEP build to NVIDIA Shield

I’ve successfully built the package, but running the .bat script leaves me with this unhelpful error message:

C:\Users\Benjamin>C:\NVPACK\android-sdk-windows\platform-tools\adb.exe  uninstall com.YourCompany.projectmaven
Failure [DELETE_FAILED_INTERNAL_ERROR]

Installing existing application. Failures here indicate a problem with the device (connection or storage permissions) and are fatal.

C:\Users\Me>C:\NVPACK\android-sdk-windows\platform-tools\adb.exe  install myproject-armv7-es31.apk
Invalid APK file: myproject-armv7-es31.apk

There was an error installing the game or the obb file. Look above for more info.

Things to try:
Check that the device (and only the device) is listed with "ADB$ devices" from a command prompt.
Make sure all Developer options look normal on the device
Check that the device has an SD card.
Press any key to continue . . .

Hello BenFreidlin,

Thank you for taking the time to report this issue, and we appreciate your patience while awaiting a response. In order to assist you in an effective manner, we would like to see if you are still experiencing the issue you are reporting in engine version 4.9.2?

If so, would you mind providing some simple steps, screenshots, or any other relevant pieces of information to help us reproduce the issue on our end?

You might find our documentation on Packaging helpful as well.

Packaging Projects

Please do not hesitate to ask questions or post any new comments in regards to the issue.

Thanks,