StereoView Element not a Type?

[The_Schrek]

Hi all together,

i am trying to program some 3D output applications for my 3D screen and i am facing some problems.
I have a simple QML Application and want to use a StereoView Element. The program compiles fine, but when i start it i get the error: "StereoView is not a type"
I am using Qt4.8 built from the new SDK and having QtQuick3D built in.

The Source Code in the qml is:

import QtQuick 1.1
 import Qt 4.7
 import Qt3D 1.0
 import Qt3D.Shapes 1.0
 
StereoView{
     id: stereo
     width: 640; height: 450
 
     Rectangle{
         id:rect1
         anchors.fill: parent
 
     }
 
 
}

import QtQuick 1.1
 import Qt 4.7
 import Qt3D 1.0
 import Qt3D.Shapes 1.0

StereoView{
     id: stereo
     width: 640; height: 450

     Rectangle{
         id:rect1
         anchors.fill: parent

     }


}

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the main code is:

#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"
#include <QGLFormat>
#include <qdeclarativeview3d.h>
 
Q_DECL_EXPORT int main(int argc, char *argv[])
{
    QScopedPointer<QApplication> app(createApplication(argc, argv));
 
    QDeclarativeView3D viewer;
 
    QGLFormat fmt;
    fmt.setAlpha(true);
    fmt.setStereo(true);
    fmt.setDepth(true);
    fmt.setBlueBufferSize(100);
    fmt.setOption(QGL::StereoBuffers);
 
    QGLFormat::setDefaultFormat(fmt);
 
    viewer.setSource(QUrl("qrc:/stereo.qml"));
 
    viewer.showFullScreen();
    return app->exec();
}

#include <QtGui/QApplication>
#include "qmlapplicationviewer.h"
#include <QGLFormat>
#include <qdeclarativeview3d.h>

Q_DECL_EXPORT int main(int argc, char *argv[])
{
    QScopedPointer<QApplication> app(createApplication(argc, argv));

    QDeclarativeView3D viewer;

    QGLFormat fmt;
    fmt.setAlpha(true);
    fmt.setStereo(true);
    fmt.setDepth(true);
    fmt.setBlueBufferSize(100);
    fmt.setOption(QGL::StereoBuffers);

    QGLFormat::setDefaultFormat(fmt);

    viewer.setSource(QUrl("qrc:/stereo.qml"));

    viewer.showFullScreen();
    return app->exec();
}

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can anyone help me with that issue?
best
Andy