After some more investigation it appears as if this is missing in the XAMLs: xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions"

Could you please indicate which xaml is missing the interactivity and interactions namespaces?
I reviewed all the xamls and the ones requiring those namespaces already include them.

I should have marked my changes as I made them, but I forgot to. I am including a corrected version of the package. It is error free in Blend but it still doesn't work in Unity. I believe it is due to the way events are being handled in the XAMLs. I am currently investigating this, but I am very new to Noesis so I'll have to work through the APIs.

It appears as if I won't be able to upload the corrected package. It is to big a file.c Let me compare my corected version to the one on GitHub and I will send a list of the changes I made.

Here are the changes I made.
Images.xaml: CORRECTED xmlns:noesis="clr-namespace:NoesisGUIExtensions"> TO xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions"
MOVED xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions" ABOVE xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions"

MainWindow.xaml: ADDED xmlns:i="http://schemas.microsoft.com/expression/2010/interactivity" xmlns:ei="http://schemas.microsoft.com/expression/2010/interactions" "I DON"T THINK THIS WAS NEEDED"

Resources.xaml: MOVED xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions" ABOVE xmlns:noesis="clr-namespace:NoesisGUIExtensions;assembly=Noesis.GUI.Extensions"

Resolved in https://github.com/Noesis/Tutorials/commit/ffab50df09a645ecc7e7c2acf2d006556247d48f
I verified it compiles and runs in both Blend (for Visual Studio 2015) and Unity 2019.1.1f1. Could you please confirm it also works in your version of Blend and Unity?

It does not work in my version of Unity 2019.1.1f1.
It loads fine but none of the buttons work.
This is the error I receive: noesis] Assets/NoesisGUI/Samples/NorthGame/Menu.xaml(194): Unknown type 'NoesisApp.Interaction'.

Hi, this demo uses the Interactivity classes included in our Unity package under 'NoesisGUI/Samples/Interactivity'.
You have to import that folder along with the Plugins folder into the NorthGame project.
Does that fix the errors?

Yes that fixed the issue. Quick question though? As someone new to this how would I know I need to include this package and where to locate it. It seems as though it is kinda hidden being in the Samples folder

You're right, this is probably something we should indicate in the README.md page of that sample (and other samples in the same situation).