Windows phone 8.1 deployment error when trying to use background task with audio and device use trigger

Question

I\'m trying to create a background task that uses the accelerometer to play with the music in the background (pause, play, etc). In the Package.appxmanifest I have a backgroundt

Answer 1

It appears that you can't have Audio and Device Use in the same background task. You will have to create 2 background tasks.

Answer 2

If you tried to upgrade your WP application and got the error,have a look at the references given below. Maybe you could be missing an element in your Manifest file.

Deploying universal application results in "package could not be registered"

Deploy error: Package could not be registered