errors with standard assets

I have been getting a couple bugs with the new standard assets:

Assets/Standard Assets/2D/Scripts/Platformer2DUserControl.cs(3,27): error CS0234: The type or namespace name CrossPlatformInput' does not exist in the namespace UnityStandardAssets’. Are you missing an assembly reference?

if anyone knows how to help please do

I’d start with checking if CrossPlatformInput.cs actually exists or not. If not try reimporting standard assets and make sure you include the missing script(s).