Error CS0246 TinyMedievalPack?

I just imported it and it is saying that error. The error message says The type of namespace name ‘UIGrid’ could not be found. I am guessing I missed importing something that the pack needs or something is in the wrong place. Can someone help me figure this out? I am new to Unity and code but have a basic understanding of each.

Kind of a late answer but I’ve just ran into this error; in case someone else will wonder what that error is about, the error comes from the NGUI package.
For that demo scene it is required.

You can comment out everything that is related to ngui and/or throws an error and you will see the scene (without any GUI of course).
It’s nothing impressive.