Hello
I want to ask a question? 
I use Lubuntu 14.04 LTS and Monodevelop 4.0,Monogame 2.5.1,Mono 3.2.8, my native languaje is the c# and the XNA.
OK the problem is that I can’t import assets (this is the all code):
(
#region Using Statements
using System;
using Microsoft.Xna.Framework;
using Microsoft.Xna.Framework.Graphics;
using Microsoft.Xna.Framework.Storage;
using Microsoft.Xna.Framework.Input;
#endregion
namespace apalaap
{
///
/// This is the main type for your game
///
public class Game1 : Game
{
GraphicsDeviceManager graphics;
SpriteBatch spriteBatch;
public Game1()
{
graphics = new GraphicsDeviceManager(this);
Content.RootDirectory = “Content”;
graphics.IsFullScreen = false;
}
///
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
///
protected override void Initialize()
{
// TODO: Add your initialization logic here
base.Initialize();
}
public Texture2D sprite;
public Rectangle lienzo;
///
/// LoadContent will be called once per game and is the place to load
/// all of your content.
///
protected override void LoadContent()
{
// Create a new SpriteBatch, which can be used to draw textures.
spriteBatch = new SpriteBatch(GraphicsDevice);
sprite = Content.Load (“Content/sprite.png”);
lienzo = new Rectangle(graphics.GraphicsDevice.Viewport.X,
graphics.GraphicsDevice.Viewport.Y,
graphics.GraphicsDevice.Viewport.Width,
graphics.GraphicsDevice.Viewport.Height);
//TODO: use this.Content to load your game content here
}
///
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
///
/// Provides a snapshot of timing values.
protected override void Update(GameTime gameTime)
{
// For Mobile devices, this logic will close the Game when the Back button is pressed
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed)
{
Exit();
}
// TODO: Add your update logic here
base.Update(gameTime);
}
///
/// This is called when the game should draw itself.
///
/// Provides a snapshot of timing values.
protected override void Draw(GameTime gameTime)
{
graphics.GraphicsDevice.Clear(Color.CornflowerBlue);
//TODO: Add your drawing code here
spriteBatch.Begin();
Vector2 pos = new Vector2(lienzo.Left,lienzo.Top);
spriteBatch.Draw(sprite, pos, Color.White);
spriteBatch.End();
base.Draw(gameTime);
}
}
}
)
I run the program and say that can’t import assets.
Please you can help me,some upgrade,solution or something else?
But linux needs more attention 
I really gratefull the help 
Thanks
This is the exactly error:
Microsoft.Xna.Framework.Content.ContentLoadException: Could not load Content/sprite.png asset!
at Microsoft.Xna.Framework.Content.ContentManager.ReadAsset[Texture2D] (System.String assetName, System.Action`1 recordDisposableObject) [0x00000] in :0
at Microsoft.Xna.Framework.Content.ContentManager.Load[Texture2D] (System.String assetName) [0x00000] in :0
at apalaap.Game1.LoadContent () [0x0001e] in /home/ivanrm507/apalaap/apalaap/Game1.cs:51
at Microsoft.Xna.Framework.Game.Initialize () [0x00000] in :0
at apalaap.Game1.Initialize () [0x00002] in /home/ivanrm507/apalaap/apalaap/Game1.cs:37
at Microsoft.Xna.Framework.Game.Run (GameRunBehavior runBehavior) [0x00000] in :0
at Microsoft.Xna.Framework.Game.Run () [0x00000] in :0
at apalaap.Program.Main () [0x00010] in /home/ivanrm507/apalaap/apalaap/Program.cs:20