Category Archives: Windows 8

I Cannot Add Callisto to Contoso Cookbook

Bob Tabor does an excellent job teaching material to developers.  While he does have his own business he also has done a number of series for Microsoft’s Channel 9.  Two of his series he put up that I wanted to go through are for Windows 8 App development; C#/XAML and HTML/CSS/JS.  I just cannot find the time to complete them.

Last night I sat down to start the C#/XAML one; recently at work I have been moved to a Silverlight project so becoming familiar with XAML is a good idea.  One of the first things you do is open the Contoso Cookbook solution and try to build it.  You’ll get an error about a Callisto reference.  If you try to use the package manager like he does in the video you will get an error.  While these videos are not even a year old, I know things have changed.  Below is the error message I received.

Could not install package ‘Callisto 1.4.0’. You are trying to install this package into a project that targets ‘.NETCore,Version=v4.5’, but the package does not contain any assembly references or content files that are compatible with that framework. For more information, contact the package author.

The fix is pretty simple if you use Nuget a lot.  You use the Package Manager Console and type the command to install the version of Callisto you need.

PM> Install-Package Callisto -Version 1.2.4
Installing ‘Callisto 1.2.4’.
Successfully installed ‘Callisto 1.2.4’.
Adding ‘Callisto 1.2.4’ to ContosoCookbook.
Successfully added ‘Callisto 1.2.4’ to ContosoCookbook.

Build, and there you go.