[SOLVED]Loading XML Content from IntermediateSerializer failing

Content
1

I have some custom content that defines sprite sheets that I serialize using IntermediateSerializer. It is being compiled to XNB file. Now when I try and bring it back in using the ContentManager I’m getting an exception that a ContentTypeReader could not be found, see below. This is with is with MonoGame 3.8. It previously worked in MonoGame 3.7.1. I’m probably missing something obvious but any thoughts?

Thanks.

Microsoft.Xna.Framework.Content.ContentLoadException
  HResult=0x80131500
  Message=Could not find ContentTypeReader Type. Please ensure the name of the Assembly that contains the Type matches the assembly in the full type name: Microsoft.Xna.Framework.Content.ReflectiveReader`1[[Psilibrary.SpriteClasses.SpriteAtlas, ShadowLib, Version=1.0.0.0, Culture=neutral, PublicKeyToken=null]] (Microsoft.Xna.Framework.Content.ReflectiveReader`1[[Psilibrary.SpriteClasses.SpriteAtlas, ShadowLib]])
  Source=MonoGame.Framework
  StackTrace:
   at Microsoft.Xna.Framework.Content.ContentTypeReaderManager.LoadAssetReaders(ContentReader reader)
   at Microsoft.Xna.Framework.Content.ContentReader.InitializeTypeReaders()
   at Microsoft.Xna.Framework.Content.ContentReader.ReadAsset[T]()
   at Microsoft.Xna.Framework.Content.ContentManager.ReadAsset[T](String assetName, Action`1 recordDisposableObject)
   at Microsoft.Xna.Framework.Content.ContentManager.Load[T](String assetName)
   at ShadowEditor.Editor.Update(GameTime gameTime) in C:\Users\Cyn\Documents\GitHub\MonoGame.ShadowMonsters\ShadowEditor\Editor.cs:line 699
   at Microsoft.Xna.Framework.Game.DoUpdate(GameTime gameTime)
   at Microsoft.Xna.Framework.Game.Tick()
   at Microsoft.Xna.Framework.SdlGamePlatform.RunLoop()
   at Microsoft.Xna.Framework.Game.Run(GameRunBehavior runBehavior)
   at ShadowEditor.Program.Main() in C:\Users\Cyn\Documents\GitHub\MonoGame.ShadowMonsters\ShadowEditor\Program.cs:line 17
2

Hello
IntermediateSerialiser does not work for me anyway

to serialize instead use xmlserilazer I have already posted below:
Help Load & RW Xml if that can help you serialize;

second possibility if you want to use the Content in this post

3

What is troublesome is that it is working fine in another project, just not this one. As far as I can tell there is nothing different between the two projects. They share a copy of the same library with a few tweaks for the difference between the games. I can’t serialize without the IntermediateSerializer because I have Dictionary fields in my classes and that is not supported. At worst I could manually parse the XML in a content reader.

4

IntermediateSerialiser it no longer works with version 3.8

5

you can serialize with xml serializer and save in a List.

6

I created a new project, copied over the content and code and it is working fine now. Just finished up testing it.