Unity wont detect device camera

Simply trying to use WebCamTexture to see video in game. But unity will not detect device camera on laptop or my phone. I know the code works because I used it before. I keep getting this error.

Cannot find webcam device no camera available.. UnityEngine.WebCamTexture:Play() kslklvk:Start() (at Assets/kslklvk.js:10)

Unity simply will not detect the camera on a windows or andriod device to use the WebCamTexture. Please help

Here is the code I am using.

var cam2:UI.Image;

function Start () { var devices:WebCamDevice; var webcamTexture:WebCamTexture = new WebCamTexture(); var renderer:Renderer = cam2.GetComponent(Renderer); renderer.material.mainTexture = webcamTexture; webcamTexture.Play(); }

function Update () {

}