FaceTracking image capture linking error?

Hey everyone

I’m building out an app using ofxFaceTracker that will take an image every time a face is found. There are no errors in the code, but during the linking phase I get an error that I am unsure how to diagnose. I originally started building this in the ofxCvHaarFinder example (why I have no idea?), I figured moving all of the files to an empty example would work in fixing it. It did not though. Anything pointing me in the right direction would be great!

Here is the error:

Here is the code

Header:

  
#pragma once  
  
#include "ofMain.h"  
#include "ofxCv.h"  
#include "ofxFaceTracker.h"  
#include "ofxFaceTrackerThreaded.h"  
#include "ofxOpenCv.h"  
//#include "ofxCvHaarFinder.h"  
#include "ofEvents.h"  
  
  
  
#define _USE_LIVE_VIDEO  
  
class testApp : public ofBaseApp{  
	public:  
		void setup();  
		void update();  
		void draw();  
		  
		void keyPressed(int key);  
		void keyReleased(int key);  
		void mouseMoved(int x, int y );  
		void mouseDragged(int x, int y, int button);  
		void mousePressed(int x, int y, int button);  
		void mouseReleased(int x, int y, int button);  
		void windowResized(int w, int h);  
		void dragEvent(ofDragInfo dragInfo);  
		void gotMessage(ofMessage msg);		  
  
        ofImage image;  
      
        ofxFaceTrackerThreaded camTrack;  
      
      
      
#ifdef _USE_LIVE_VIDEO  
    ofVideoGrabber 		vidGrabber;  
#else  
    ofVideoPlayer 		vidPlayer;  
#endif  
      
    ofxCvColorImage			colorImg;  
      
    ofxCvGrayscaleImage 	grayImage;  
    ofxCvGrayscaleImage 	grayBg;  
    ofxCvGrayscaleImage 	grayDiff;  
      
    ofxCvContourFinder 	contourFinder;  
      
    int 				threshold;  
    bool				bLearnBakground;  
};  
  

setup:

  
#ifdef _USE_LIVE_VIDEO  
    vidGrabber.setDeviceID(9);  
    vidGrabber.setVerbose(true);  
    vidGrabber.initGrabber(320,240);  
      
#else  
    vidPlayer.loadMovie("fingers.mov");  
    vidPlayer.play();  
#endif  
      
    colorImg.allocate(320,240);  
	grayImage.allocate(320,240);  
	grayBg.allocate(320,240);  
	grayDiff.allocate(320,240);  
      
	bLearnBakground = true;  
	threshold = 80;  
      
    camTrack.setup();  

update:

  
    bool bNewFrame = false;  
      
#ifdef _USE_LIVE_VIDEO  
    vidGrabber.grabFrame();  
    bNewFrame = vidGrabber.isFrameNew();  
#else  
    vidPlayer.idleMovie();  
    bNewFrame = vidPlayer.isFrameNew();  
#endif  
      
	if (bNewFrame){  
          
#ifdef _USE_LIVE_VIDEO  
        colorImg.setFromPixels(vidGrabber.getPixels(), 320,240);  
        image.setFromPixels(vidGrabber.getPixels(), 320, 240, OF_IMAGE_COLOR);  
#else  
        colorImg.setFromPixels(vidPlayer.getPixels(), 320,240);  
#endif  

draw:

  
    if(camTrack.getFound()){    
          
        vidGrabber.grabFrame();    
        image.setFromPixels(vidGrabber.getPixels(), 320, 240, OF_IMAGE_COLOR);  
        image.saveImage(ofToString(ofGetElapsedTimef(), 0)+".jpg");    
    }  

thanks guys!

UPDATE:
I got it working with by copying an app and breaking it down just for this. Thanks to those who took a look!