Error building Windows Phone project with build configuration ARM

Question

The project can be compiled and deployed to the Emulator and Device . Everything works fine as long as the build configuration is set at AnyCPU or x86 . And is set to Debug .

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But when build configuration is set to Release, project doesn't build. If project is set to AnyCPU and ARM, the same problem exists.

Error 1

Files has invalid value "<?xml version="1.0"?>". Illegal characters in path.

The error doesn't point to a file.

External Libraries referenced by in this project-

 - JeffWilcox.PhoneThemeManager
 - Buddy
 - AdDuplex

Answer 1

The Windows Phone 8 emulator can run only applications built as AnyCPU or x86, because it is actually running on your PC as on Hyper-V as a virtual machine.
On the other hand all Windows Phone 8 devices are ARM only, so to run your app on device, it needs to be AnyCPU or ARM.
I hope this clears some confusion in the deployment limitations.