Eclipse is being a butt

[King Nerd III]

Hello, it is I, Lord Supreme Programmer with Team 1410, and I am trying to write the code for the bot this year, but alas, I keep getting these errors while using CANTalon:

The type 'CANTalon' must implement the inherited pure virtual method 'CANSpeedController::ConfigPotentiometerTurns'

and so on. It says this for every CANTalon I write, and nothing seems to go away. The file still works and builds, but these errors are annoying. Does anyone know how to fix this?