Openni error opening video stream [closed]

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I have Ubuntu 12.04 LTS 64bits. Since 1 or 2 month I use ros fuerte. I capture from matlab using the following mex: mathworks.com/matlabcentral/fileexchange/30242-kinect-matlab. The first time that i opened stream it work fine, but the second time didn't, I need to restart my computer. To try to solve solve the problem I reinstall ubuntu and install ros groovy. Now the problem is bigger I can not run any time. I try to run Example and I have the following error:

Example Open failed: Bad Parameter sent to the device! Error using mxNiCreateContext Kinect Error

Error in Example (line 10) KinectHandles=mxNiCreateContext(SAMPLE_XML_PATH);

The xml config file doesn't change. The XML code is:

<OpenNI>
<Licenses>      
    <License vendor="PrimeSense" key="0KOIk2JeIBYClPWVnMoRKn5cdY4="/>       
</Licenses>
<Log writeToConsole="false" writeToFile="false">
    <!-- 0 - Verbose, 1 - Info, 2 - Warning, 3 - Error (default) -->
    <LogLevel value="2"/>
    <Masks>
        <Mask name="ALL" on="true"/>
    </Masks>
    <Dumps>
    </Dumps>
</Log>
<ProductionNodes>
    <Node type="Image" name="Image1">
        <Configuration>
            <MapOutputMode xRes="640" yRes="480" FPS="30"/>
            <Mirror on="true"/>
        </Configuration>
    </Node>
    <Node type="Depth" name="Depth1">
        <Configuration>
            <MapOutputMode xRes="640" yRes="480" FPS="30"/>
            <Mirror on="true"/>
        </Configuration>
    </Node>
    <!--
    <Node type="Audio" name="Audio1">
    </Node>
    -->
</ProductionNodes>

</openni>

I have done programs that use openni and they also do not run but compile. The source code is the following:

int key;

XnStatus result = XN_STATUS_OK;  
xn::DepthMetaData depthMD;
xn::ImageMetaData imageMD;

IplImage*  imgDepth16u=cvCreateImage(cvSize(640,480),IPL_DEPTH_16U,1);
IplImage* imgRGB8u=cvCreateImage(cvSize(640,480),IPL_DEPTH_8U,3);
IplImage* imageShow=cvCreateImage(cvSize(640,480),IPL_DEPTH_8U,3);
IplImage*  depthShow=cvCreateImage(cvSize(640,480),IPL_DEPTH_8U,1);


cvNamedWindow("depth",1);
cvNamedWindow("image",1);


xn::Context context; 
result = context.Init(); 
//CheckOpenNIError( result, "initialize context" );  

// creategenerator  
xn::DepthGenerator depthGenerator;  
result = depthGenerator.Create( context ); 
//CheckOpenNIError( result, "Create depth generator" );  
xn::ImageGenerator imageGenerator;
result = imageGenerator.Create( context ); 
//CheckOpenNIError( result, "Create image generator" );


//map mode  
XnMapOutputMode mapMode; 
mapMode.nXRes = 640;  
mapMode.nYRes = 480; 
mapMode.nFPS = 30; 
result = depthGenerator.SetMapOutputMode( mapMode );    
result = imageGenerator.SetMapOutputMode( mapMode );  


//read data

result = context.StartGeneratingAll(); 
while(!(result = context.WaitAndUpdateAll( ))) 
{  
    //get meta data
    depthGenerator.GetMetaData(depthMD); 
    imageGenerator.GetMetaData(imageMD);

    //convert to OpenCV output
    memcpy(imgDepth16u->imageData,depthMD.Data(),640*480*2);
    cvConvertScale(imgDepth16u,depthShow,255/4096.0,0);
    memcpy(imgRGB8u->imageData,imageMD.Data(),640*480*3);
    cvCvtColor(imgRGB8u,imageShow,CV_RGB2BGR);


    //imshow
    cvShowImage("depth", depthShow);
    cvShowImage("image",imageShow);
    //delay for update the imshow
    //key=cvWaitKey(2);
    usleep(2*1000);

}

I tried also to run roslaunch openni_launch openni.launch and I can not see anything.