[Geek 2.0]

Originally Posted by Patrickwhite

I believe the problem is your source and output. You are sending edu.wpi.first.wpilibj.AnalogChannel, edu.wpi.first.wpilibj.Jaguar, while PIDController expects classes implementing the edu.wpi.first.wpilibj.PIDSource and edu.wpi.first.wpilibj.PIDOutput interfaces. The idea is that you create your own classes implementing these interfaces, and pass them to the constructor.

AnalogChannel implements PIDSource and Jaguar implements PIDOutput, so that's probably not their problem.