'CharacterMotor' does not denote a valid type

MOUNTAIN DRAGON FULL PACK
/Standard Assets/Character Controllers/Scripts/PlatformInputController.js(5,21): BCE0018: The name ‘CharacterMotor’ does not denote a valid type (‘not found’). Did you mean ‘UnityEngine.CharacterInfo’?

How can this error be fixed, to use this Model purchased from te asset store?

If you go to the 'Asset’s menu and select ‘Import Package/Character Controller’, the ‘CharacterMotor’ script will come in as part of that package.