title: How to Target WP7.1 in Visual Studio 2013
body: <p>I have just upgraded to Windows 8.1 and installed Visual Studio 2013. I am trying to update a previous WP7.1 solution but when opening with VS2013 I am asked to update some things. I select yes, and everything seems to work except for the Windows Phone Toolkit I got from NuGet in my original solution (built in VS2012). After updating I had a migration report error saying <code>Some NuGet packages were installed using a target framework different from the current target framework and may need to be reinstalled. For more information, visit http://docs.nuget.org/docs/workflows/reinstalling-packages. Packages affected: WPtoolkit</code>. Since my app was built targeting WP7.1 in VS2012 I assumed that removing and redownloading the WPToolkit would work, but it targets WP80 by default. It seems I cannot create a Windows Phone app targeting 7.1 anymore? Is there a solution for this?</p>