Robot not turning with line followers

[normpearii]

For some reason our robot refuses to turn when using autonomous with line followers

Declare:

DigitalInput *lightL;
DigitalInput *lightM;
DigitalInput *lightR;

Init:

lightL = new DigitalInput(7);
lightM = new DigitalInput(5);
lightR = new DigitalInput(3);

Autonomous Code:

		while(IsAutonomous())
		{
			ilightR=(lightR->Get()==1);
			ilightL=(lightL->Get()==1);
			ilightM=(lightM->Get()==1);
			dsLCD->Printf(DriverStationLCD::kUser_Line2, 1, "%d", ilightL);
			dsLCD->Printf(DriverStationLCD::kUser_Line3, 1, "%d", ilightM);
			dsLCD->Printf(DriverStationLCD::kUser_Line4, 1, "%d", ilightR);
			dsLCD->Printf(DriverStationLCD::kUser_Line5, 1, "%d", atFork);
						dsLCD->UpdateLCD();
			
			if(initialconditions)
			{
				if (ilightM == 1)
				{
				myRobot.Drive(.5,0);
				}
			}
			
			if (initialconditions && (ilightL == 1) && (ilightR == 0))
			{
				myRobot.Drive(.5,-.5);
			}
			if (initialconditions &&(ilightR == 1) && (ilightL == 0))
		{
			myRobot.Drive(.5,.5);
		}
		if((ilightL == 1) && (ilightR == 1))
		{
			initialconditions=false; 
			atFork=true;
		}
	
		if (atFork&&(ilightM==0)) 
		{
			myRobot.Drive(.5,.5);
		}
		if(atFork&&ilightM==1)
		{
			atFork=false;pastFork=true; 
			encoderL.Reset();
			encoderR.Reset();
			encoderL.Stop();
			encoderR.Stop();
			encoderL.Start();
			encoderR.Start();
		}
		if(pastFork)
		{
			s[2]->Set(true);
			if ((encoderL.Get()>arbitrarynumbernumber1)&&(encoderR.Get()>arbitrarynumbernumber2))
			{
				IareFinished=true;
			}
			if (!IareFinished)
			{
				if (ilightM==1)
				{
					myRobot.Drive(.5,0);
				}
				if ((ilightL==1) && (ilightR==0))
				{
					myRobot.Drive(.5,.5);
				}
				if ((ilightR==1) && (ilightL==0))
				{
					myRobot.Drive(.5,-.5);
				}

			}
			if (IareFinished==true)
			{
				myRobot.Drive(0,0);//quad erat demonstratum
			}
		}	
			
	}

We also tried the example code and get the same results. The Line trackers appear to be working based on the lights on them.