Windows Store Apps and Bing Maps

I started creating a RoadAlert client application to be used on RT tablets.  One of the first stumbling blocks was using Bing maps.  I downloaded the SDK easily.  However, when I went to add the maps to my project, I got this:

Capture1

What I had to do was change the project deployment FROM Any CPU to ARM so that the references would resolve:

Capture2

I was then able to get the reference:

Capture3

The problem is then when I ran the app on my developer workstation:

Capture

What I needed to do was the change the project type to x64 so that it would run locally.  Then, when I created the package, I only targeted ARM and then it ran great on my tablet.