Webcam texture exception handling

Hi Guys,

I'm doing project in which I use webcam to take user's photo. In this if webcam is used by other application or not found it throws exception and some weird things happen. I want to check if exception has been thrown. I tried using try...catch clause but it didn't work. Anybody knows how to do it?

Below is my code.

var error : TextMesh;

function Start () { try { var webcamTexture : WebCamTexture = WebCamTexture();

     if( !webcamTexture.isPlaying)
     {
      renderer.material.mainTexture = webcamTexture;
     webcamTexture.Play();
     print(" texture play");
     }
     else
     error.text = " Camera not found or other application is using camera";

// Debug.Log(webcamTexture.isPlaying); } catch( err : System.Exception) { error.text = err.Message; print("from catch"); }

 }