2D Game kit_Compile errors_Please help Newbie

Just started Unity, attempting 2D Game Kit, downloaded the "stuff" into the latest unity 2019. Did not work as had compile errors. On Unity Learn site it states 2D Game kit will run on 2017.3.0 and higher. As 2019 did not work, I downloaded the closest one that is higher than requirements, got 2017.4.28fl.
Still cant run game due to compile errors.

Its very disheartening for a newbie to try this and not been able to get the UNITY tutorials to work ??

Please HELP

The error message in the Console window;

There are inconsistent line endings in the 'Assets/2DGamekit/Scripts/UI/InputDisplayUI.cs' script. Some are Mac OS X (UNIX) and some are Windows.
This might lead to incorrect line numbers in stacktraces and compiler errors. Many text editors can fix this using Convert Line Endings menu commands.

There are inconsistent line endings in the 'Assets/2DGamekit/Scripts/UI/KeyUI.cs' script. Some are Mac OS X (UNIX) and some are Windows.
This might lead to incorrect line numbers in stacktraces and compiler errors. Many text editors can fix this using Convert Line Endings menu commands.

Assets/2DGamekit/Scripts/Editor/CheckForError.cs(13,13): error CS0103: The name `File' does not exist in the current context

Assets/2DGamekit/Scripts/Editor/CheckForError.cs(41,9): error CS0103: The name `File' does not exist in the current context

All compiler errors have to be fixed before you can enter playmode!
UnityEditor.SceneView:ShowCompileErrorNotification()

 

Running on Windows 10

 

These are not actual error messages. They're just warnings/suggestions. You can do what it suggests, or ignore it.

These two are indeed error messages and actually have to be fixed. I've never used this kit though so I don't know exactly what's expected here. I would guess that it's trying to access the standard C# File class, so you just need to add

Code (CSharp):

1. using System.IO;

to the top of the script.