ReadPixels problem

Hello, I have a problem that is driving me crazy , I searched literature about it but it seems no one gives to the solution , some say even that may be a bug in this version of Unity . The problem is that when I try to take a screenshot I obtain always an offset image. I used this code:

public IEnumerator CaptureCamera() { isProcessing = true; // wait for graphics to render yield return new WaitForEndOfFrame();

     // create the texture
     Texture2D screenTexture = new Texture2D(Screen.width, Screen.height, TextureFormat.RGB24, true);
     // put buffer into texture
     screenTexture.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0);
     // apply
     screenTexture.Apply();

     dataToSave = screenTexture.EncodeToPNG();
     destination = Path.Combine(Application.persistentDataPath, System.DateTime.Now.ToString("yyyy-MM-dd-HHmmss") + ".png");
     File.WriteAllBytes(destination, dataToSave);
     isProcessing = false;
 }

this the original img: and this is the result: My Unity version is 5.2.2f1 Personal Please someone knows the solution to this problem? Thanks in advance