Chief Delphi - Uncaught C++ Exception

I have vision code that will detect the target and will spit the number of particles found to the console. But whenever it looses targets, it gives the following error:
Code:
(FRC_RobotTask): Uncaught C++ Exception (#1)!
It then says the memory addresses of the call stack.

Here's my code
Code:
#include "Vision.h"

#include "../Robotmap.h"



Vision::Vision() : Subsystem("Vision") {

        printDebug("Initializing Camera Settings.");

        

        // Get an instance of the camera

        AxisCamera &camera = AxisCamera::GetInstance(CAMERA_IP);

        

        // Write some configuration to the camera

        camera.WriteResolution(CAMERA_RESOLUTION);

        camera.WriteCompression(CAMERA_COMPRESSION);

        camera.WriteBrightness(CAMERA_BRIGHTNESS);

        camera.WriteMaxFPS(CAMERA_FPS);

        camera.WriteColorLevel(CAMERA_COLOR_LEVEL);

        

        

        printDebug("Done Configuring Camera.");

        

        lightRing = new Relay(DEFAULT_DIGITAL_MODULE, LIGHT_RING_PORT, Relay::kForwardOnly);

}

    

void Vision::InitDefaultCommand() {

        // Set the default command for a subsystem here.

        //SetDefaultCommand(new MySpecialCommand());

}



vector<ParticleAnalysisReport> Vision::particleAnalysis()

{

        // Get an instance of the Axis Camera

        AxisCamera &camera = AxisCamera::GetInstance(CAMERA_IP);

        

        // check if there is a new image

        if (camera.IsFreshImage())

        {

                // Get the Image

                ColorImage *colorImage = camera.GetImage();

                BinaryImage *binImage = colorImage->ThresholdRGB(0,175,175,255,0,175);

                

                printDebug("Getting Particle Analysis Report.");

                vector<ParticleAnalysisReport> *temp = binImage->GetOrderedParticleAnalysisReports();

                particles = *temp;

                delete temp;

                

                printDebug("Stepping through particle report to remove particles with area too small.");

                // Step through the particles and elimate any that are too small

                for (UINT8 i = 0; i<particles.size(); i++) {

                        if(particles.at(i).particleArea<MIN_PARTICLE_AREA)

                        {

                                // Erase the current particle from view

                                particles.erase(particles.begin()+i-1);

                                

                                // Because erasing an element actually adjusts all elements

                                // after the current one, we need to bump <tt>i</tt> down one

                                i--;

                        }

                }

                

        }

        

        printDebug("Done processing image.");

        

        targetParticle = particles.at(0);

        

        return particles;

}



void Vision::setTargetParticle(int index)

{

        targetParticle = particles.at(index);

}



double Vision::getNormalizedPosition()

{

        return targetParticle.center_mass_x_normalized;

}