Build Errors

[SirGibbs]

Hey guys,
after multiple errors with eclipse and my code, I got it finally but when I try to deploy the code now, I get this error:

ERROR Unhandled exception instantiating robot org.usfirst.frc.team5676.robot.Robot java.lang.IllegalStateException: Network tables has already been initialized at [edu.wpi.first.wpilibj.networktables.NetworkTable.checkInit(NetworkTable.java:45), edu.wpi.first.wpilibj.networktables.NetworkTable.setServerMode(NetworkTable.java:68), edu.wpi.first.wpilibj.RobotBase.<init>(RobotBase.java:58), edu.wpi.first.wpilibj.IterativeRobot.<init>(IterativeRobot.java:55), org.usfirst.frc.team5676.robot.Robot.<init>(Robot.java:16), sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method), sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62), sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45), java.lang.reflect.Constructor.newInstance(Constructor.java:408), java.lang.Class.newInstance(Class.java:433), edu.wpi.first.wpilibj.RobotBase.main(RobotBase.java:197)]

I just dont know what I would need to change to make it running... here is my code:

package org.usfirst.frc.team5676.robot;

import edu.wpi.first.wpilibj.IterativeRobot;
import edu.wpi.first.wpilibj.RobotDrive;
import edu.wpi.first.wpilibj.Joystick;
import edu.wpi.first.wpilibj.Timer;
import edu.wpi.first.wpilibj.DoubleSolenoid;
import org.usfirst.frc.team5676.robot.XboxController; 
import edu.wpi.first.wpilibj.Compressor;	
import org.usfirst.frc.team5676.robot.XboxController.Axis;
import org.usfirst.frc.team5676.robot.XboxController.buttons;
import org.usfirst.frc.team5676.robot.XboxController.triggers;


public class Robot extends IterativeRobot {
   
	RobotDrive myDrive; 
	Joystick driveStick; 
	static XboxController gameStick = new XboxController(1);
	DoubleSolenoid Piston; 
	
	static Axis LeftStick=Global.driver.LeftStick;
	static Axis RightStick=Global.driver.RightStick;
	static triggers Triggers = Global.driver.Triggers;
	static buttons DriverButtons = Global.driver.Buttons;
	static buttons OperatorButtons = Global.operator.Buttons;
	static int OperatorDpad = -1;
	
    public void robotInit() {
    	myDrive = new RobotDrive (1, 2, 3, 4);
    	driveStick = new Joystick(1); 
    }

    
    public void autonomousPeriodic() {

    }

    public void operatorControl() { 
    	while (isOperatorControl() && isEnabled()) { 
    		myDrive.arcadeDrive(driveStick);
    		Timer.delay(0.01);
    	}
    }
    public void teleopPeriodic() {
        
    }
    
    public void moveArm()
	{	 Piston = new DoubleSolenoid(0,1 );
		
		if(gameStick.button[0].get() == true) {
			
			Piston.set(DoubleSolenoid.Value.kForward);	
		
			System.out.println("'A' button is pressed: Piston moves forward");
		}
	  else if(gameStick.button[1].get() ==true)
		{
			Piston.set(DoubleSolenoid.Value.kReverse); 
	
			System.out.println("'B' button is pressed: Piston moves backward");
		}
		else
		{
			Piston.set(DoubleSolenoid.Value.kOff);		
		}
	}
    
    public void FrontArm()
   	{	 Piston = new DoubleSolenoid(2,3 );
   			
   		if(gameStick.button[2].get() == true) {
   			
   			Piston.set(DoubleSolenoid.Value.kForward);	
   			System.out.println("'X' button is pressed: Piston moves forward");
   		}
   	  else if(gameStick.button[3].get() ==true)
   		{
   			Piston.set(DoubleSolenoid.Value.kReverse); 
   			System.out.println("'Y' button is pressed: Piston moves backward");
   		}
   		else
   		{
   			Piston.set(DoubleSolenoid.Value.kOff);	
   		}
   	}

    
    public void pickerArm()
	{	 Piston = new DoubleSolenoid(4,5 );
		
		if(gameStick.button[4].get() == true) {
			
			Piston.set(DoubleSolenoid.Value.kForward);	
		
			System.out.println("LB' button is pressed: Piston moves forward");
		}
	  else if(gameStick.button[5].get() ==true)
		{
			Piston.set(DoubleSolenoid.Value.kReverse); 
			
			System.out.println("'RB' button is pressed: Piston moves backward");
		}
		else
		{
			Piston.set(DoubleSolenoid.Value.kOff);
		}
	}
    
  
    public void testPeriodic() {
    
    }
    
}

Thank you in advance for any help or suggestions.