Component error in C# [Solved]

I am almost done rewriting my JavaScript Traffic AI in C#. However I bumped into this problem and I can't see no reson why this should be wrong. In Javascript I use this line to access a script that is attached to the waypoint container object:

  var PathScript: PathScript = waypointContainer.GetComponent(PathScript);

Now in C# I'v written:

  PathScript PathScript = waypointContainer.GetComponent<PathScript>();

 

 

But then I get: "The type or namespace name `PathScript' could not be found. Are you missing a using directive or an assembly reference?"

I have used the exact same code in other CS scripts without any problems...

like this (where "AxisCarController" is a script) :

    AxisCarController AxisCarController = Car.GetComponent<AxisCarController>();
               AxisCarController.active=false;

What's the difference here?