How to mesh ofxOpenNI with ofxFluid?

[damia]

Hi,

First of all, I would like to appreciate your hard work writing this class and sharing for all the community.

I have some problems when I mesh your class with ofxFluid.
I can add the ofxFluid addon but when I call the class:

ofApp.h

#pragma once

#include "ofMain.h"
#include "ofxOpenNI.h"
#include "ofxFluid.h"

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);
            void exit();

    void userEvent(ofxOpenNIUserEvent & event);

    ofxOpenNI openNIDevice;

    ofTrueTypeFont verdana;
    ofxFluid fluid; 

Appears some errors:

Undefined symbols for architecture i386:
"vtable for ofxFluid", referenced from:
ofxFluid::~ofxFluid() in testApp.o
NOTE: a missing vtable usually means the first non-inline virtual member function has no definition.
"ofxFXObject::~ofxFXObject()", referenced from:
ofxFluid::~ofxFluid() in testApp.o
"ofxFluid::ofxFluid()", referenced from:
Fluids::Fluids() in main.o
ld: symbol(s) not found for architecture i386
clang: error: linker command failed with exit code 1 (use -v to see invocation)

Any one know how to solve it?
Thank you so much.