CommandsPackage

When I build a simple projet for Windows Phone 8 in Unity, it produces a Visual Studio solution. When I open this solution to build on an actual WP8, I get the message: The ‘CommandsPackage’ package did not load correctly.

I have Visual Studio 2013 Pro with Update 4 and I installed the Windows Phone 8.1 SDK Integration.

Any insight on what I should try to do?

Are you exporting Windows Phone 8 ?
Try WP8.1, you can find it under Windows Store Apps platform as SDK.

Thank you very much!
I switched to Windows Store Apps and used WP8.1 SDK and all is fine!