@'Leonid': @'Fabian': @'Leonid': Unfortunantely I didn't received a solution, but I found a root cause of my problem. It's a defect in code. For those who met the same problem. It's a Null Reference exception in code when it tries to receve reference to camera and call null reference methods. To fix the problem you need to make changes in two places. 1.``` private function onStart():void if(Camera.getCamera().muted) if(Camera.getCamera() && Camera.getCamera().muted) 2\.``` private function completeRegistration():void ```… curCamera = Camera.getCamera(cameraIndex.toString()); curCamera.addEventListener(StatusEvent.STATUS, onCameraStatus); if(!curCamera.muted != cameraAllowed) { cameraAllowed = !curCamera.muted; cameraChangedStatus(); } replace with curCamera = Camera.getCamera(cameraIndex.toString()); if (curCamera) { curCamera.addEventListener(StatusEvent.STATUS, onCameraStatus); if(!curCamera.muted != cameraAllowed) { cameraAllowed = !curCamera.muted; cameraChangedStatus(); } } Hallo, I've got the same problem. Thanks for your post. However, I can't find where the code is. I got 4.1, too. In which documents do I have to change the code? Thanks You should use Adobe Flash Builder (look throw the forum to find additional info about it) and import 4.1.fxp into it. Just to view the code you can unzip 4.1.fxp using any archiver and see the file \4.1\src\JabberCam.as in it Hello, thanks for answering. Your code worked well. It's functioning now! Thanks again for your help! It took some time until I knew how to use adobe flash builder but well… anyone who needs help with that can ask me or use the forum. Another question you might be able to answer. Seems like you are able to work the code :-) http://www.videosoftware.pro/forum/THREAD-Text-I-am-and-nickname-field-mix-up Thanks