Release build fails, debug does not?

Once again thank you all for taking the time to help me with my problem. I have come accross something I have never encountered before. My program works fine in debug builds but when I compile it to a release build .exe my program throws an unhandled exception and all I can see is a white window with two red outlines of triangles... ************** Exception Text ************** System.NullReferenceException: Object reference not set to an instance of an object. at ArcaneStorm.GameEngine.CheckForInput() at ArcaneStorm.GameEngine.OnPaint(PaintEventArgs e) at System.Windows.Forms.Control.PaintWithErrorHandling(PaintEventArgs e, Int16 layer, Boolean disposeEventArgs) at System.Windows.Forms.Control.WmPaint(Message& m) at System.Windows.Forms.Control.WndProc(Message& m) at System.Windows.Forms.ScrollableControl.WndProc(Message& m) at System.Windows.Forms.ContainerControl.WndProc(Message& m) at System.Windows.Forms.Form.WndProc(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m) at System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m) at System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam) I have found that if I comment out my calls to CheckForInput() and Render() in my OnPaint method, the error does not occur. Both CheckForInput() and Render() must be commented out or the error still happens. I have tried looking for uninitialized variables in these methods without any luck. If anyone spots anything out of place that may be causing the error I am seeing, please let me know! Thanks again. My OnPaint method

 
protected override void OnPaint(PaintEventArgs e)
        {
            
            _deltaTime = HiResTimer.GetElapsedTime();
            
            CheckForInput();
            
            Render();

            this.Invalidate();
             
        }

My CheckForInput() Method



 private void CheckForInput()
        {
            // Check for user input
            _keyboard.Poll();
            _mouse.Poll();
            
            if (_keyboard.State[Key.Escape])
            {
                Application.Exit();
            }
// Move forward and back along the Z-axis
            if (_keyboard.State[Key.W])
                _camera.MoveForward(_moveSpeed * _deltaTime);

            if (_keyboard.State[Key.S])
                _camera.MoveForward(-_moveSpeed * _deltaTime);

            // Move left and right along the X-axis
            if (_keyboard.State[Key.A])
                _camera.Strafe(-_moveSpeed * _deltaTime);

            if (_keyboard.State[Key.D])
                _camera.Strafe(_moveSpeed * _deltaTime);

            if (_keyboard.State[Key.UpArrow])
                _camera.AdjustPitch(-3f * _deltaTime);

            if (_keyboard.State[Key.DownArrow])
                _camera.AdjustPitch(3f * _deltaTime);

            if (_keyboard.State[Key.RightArrow])
                _camera.AdjustYaw(3f * _deltaTime);

            if (_keyboard.State[Key.LeftArrow])
                _camera.AdjustYaw(-3f * _deltaTime);

            if ((_keyboard.State[Key.LeftShift]) && (_camera.Jumping == false))
            {
                _camera.Jump();
            }

            // Shoot a fireball if space is hit
            
            if ((_keyboard.State[Key.Space]))
            {
                spritestruct newsprite = new spritestruct();
                newsprite.position = _camera.Position;
                newsprite.angles = _camera.Look;
                spriteList.Add(newsprite);
}
            
            // If you enable these keys you need to turn off the
            // terrain height adjustment in the Render method
            //_camera.SetHeight ( _terrain.TerrainHeight ( (int)_camera.Position.X, (int)_camera.Position.Z ) );

            // Move up and down along the Y-axis
            //if (_keyboard.State[Key.Q])
            //    _camera.UpDown(moveSpeed * _deltaTime);

            //if (_keyboard.State[Key.Z])
            //    _camera.UpDown(-moveSpeed * _deltaTime);
        
            if (_keyboard.State[Key.F1])
                _fillMode = FillMode.WireFrame;

            if (_keyboard.State[Key.F2])
                _fillMode = FillMode.Solid;

            if (_keyboard.State[Key.F3])
                _fillMode = FillMode.Point;

            if (_keyboard.State[Key.F4])
                _lightOn = true;

            if (_keyboard.State[Key.F5])
                _lightOn = false;
        
        }

And finally my Render method



private void Render()
        {
			// Force the Y to be the height of the terrain
			// turn of input for Y
            try
            {
                _camera.SetHeight(_terrain.TerrainHeight((int)_camera.Position.X, (int)_camera.Position.Z), _deltaTime);
            }
            catch
            {
                // Off the terrain grid
            }

            _camera.Update();

            // Play with these settings
            _device.RenderState.FillMode = _fillMode;
            _device.Lights[0].Enabled = _lightOn;

            /*
            foreach (Tank tank in _tanks)
            {
                tank.Update(_deltaTime);
            }
            */
            // Clear the screen
            _device.Clear(ClearFlags.Target | ClearFlags.ZBuffer, Color.Black, 1.0f, 0);

            // Tell DirectX we are about to draw something
            _device.BeginScene();

            _skyBox.Render(_camera);

            _terrain.Render();

            RenderUnits();

            // Draw any fireball sprites
            if (spriteList.Count > 0)
            DrawSprites();

            RenderFonts();

           

            // Tell DirectX that we are done drawing
            _device.EndScene();

            // Flip the back buffer to the front
            _device.Present();
        }

Topic Locked