Implicit conversion error with the new version 3.0 of Emgu

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C#

Emgu-CV

OpenCV

I am,, ... I run a code example to display a USB cam on a picturebox, using version "emgucv-windows-universal-cuda 2.4.10.1940", okay, it works.
I then installed the "emgucv-windows-universal-cuda 3.0.0.2131" and here began the problems, the same code when compiled in an error, ...
"Erorr: Can not implicitly convert type'Emgu.CV.Mat'inEmgu.CV.Image <Emgu.CV.Structure.Bgr, byte>".
I'm stuck I can not fix the error ..
Help!
thank you
This is code

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Windows.Forms;
using Emgu.CV;
using Emgu.CV.Structure;
using Emgu.Util;

namespace Camera_capture2
{
    public partial class Camera_capture2 : Form
    {
        private Capture capture;
        private bool captureInProgress;

        public Camera_capture2()
        {
            InitializeComponent();
        }

        private void ProcessFrame(object sender, EventArgs arg)
        {
            Image<Bgr, Byte> ImageFrame = capture.QueryFrame();
            CamImageBox.Image = ImageFrame;
        }

        private void button1_Click(object sender, EventArgs e)
        {
            #region if capture is not created, create it now
            if (capture == null)
            {
                try
                {
                    capture = new Capture();
                }
                catch (NullReferenceException excpt)
                {
                    MessageBox.Show(excpt.Message);
                }
            }
            #endregion

            if (capture != null)
            {
                if (captureInProgress)
                {
                    btnStart.Text = "Start!"; //
                    Application.Idle -= ProcessFrame;
                }
                else
                {
                    btnStart.Text = "Stop";
                    Application.Idle += ProcessFrame;
                }

                captureInProgress = !captureInProgress;
            }
        }
        private void ReleaseData()
        {
            if (capture != null)
               capture.Dispose();<pre><pre></
        }
   }
}