I've been using XNA for a while but recently I've needed to write a content extension library which I haven't done before. I need to import a TextureAtlas class from a file that is exported by a tool I wrote. The output of my editor is a serialized XML file that contains a list of all StaticImages and Animations in the TextureAtlasFile class that its serialized from. In my solution I have the TextureAtlasContentLoader project which holds all of the classes that I will need for the texture atlas both in game and for loading the actual content. The importer deserializes the xml back to a TextureAtlasFile and the processor converts it to a TextureAtlas to return after it is loaded.
The problem is that I have no idea how to share the classes between the content extension project and the game project that will be using the TextureAtlas class. I've tried referencing the content extension project in the game project and that works fine to get me pass compiling but it throws a ContentLoadException exception when I call
textures = Game1.content.Load<TextureAtlas>("MainMenu");
Error loading "MainMenu". Cannot find type Client.Render.TextureAtlas, TextureAtlasContentLoader, Version=22.214.171.124, Culture=neutral, PublicKeyToken=null.
The only other clue to whats wrong I have is a warning while compiling that says/
Warning 2 The referenced assembly "Microsoft.Xna.Framework.Content.Pipeline, Version=126.96.36.199, Culture=neutral, PublicKeyToken=842cf8be1de50553, processorArchitecture=x86" could not be resolved because it has a dependency on "Microsoft.Build.Framework, Version=188.8.131.52, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a" which is not in the currently targeted framework ".NETFramework,Version=v4.0,Profile=Client". Please remove references to assemblies not in the targeted framework or consider retargeting your project. Client
which leads me to believe I'm not supposed to reference it in the game project. So to summarize my question, how do I handle my TextureAtlas and TextureHandle class that both the content loader and the game project need without causing errors?