Serialization Exception on saving a file

Scripting
1

I wrote a short code to Save and Load the highscore of my game, but it doesn’t do what its supposed to. It throws this exception:
SerializationException: serializationStream supports seeking, but its length is 0
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.NoCheckDeserialize (System.IO.Stream serializationStream, System.Runtime.Remoting.Messaging.HeaderHandler handler) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:155)
System.Runtime.Serialization.Formatters.Binary.BinaryFormatter.Deserialize (System.IO.Stream serializationStream) (at /Users/builduser/buildslave/mono/build/mcs/class/corlib/System.Runtime.Serialization.Formatters.Binary/BinaryFormatter.cs:136)
GameController.Load () (at Assets/scripts/GameController.cs:299)
GameController.Awake () (at Assets/scripts/GameController.cs:82)

What am i doing wrong? Probably something really obvious, but i just can’t find it.

Here is the code:

[System.Serializable]
public class Data
{

    public int highscore;
    public string highscoreName;
}

public void Save()
    {
       
        BinaryFormatter formatter = new BinaryFormatter();
        FileStream file = File.Open(Application.dataPath + "/highscore.dat", FileMode.OpenOrCreate);
        Data.highscore = GetComponent<GameController>().Data.highscore;
        Data.highscoreName = GetComponent<GameController>().Data.highscoreName;
        formatter.Serialize(file, Data);

        file.Close();
    }
    public void Load()
    {
       

            BinaryFormatter formatter = new BinaryFormatter();
            FileStream file = File.Open(Application.dataPath + "/highscore.dat", FileMode.OpenOrCreate);

            Data Data = (Data)formatter.Deserialize(file);

            GetComponent<GameController>().Data.highscore = Data.highscore;
            GetComponent<GameController>().Data.highscoreName = Data.highscoreName;
            file.Close();
           

       
    }
2

Looks like the file length is 0. Try opening the file with FileMode.Open, you dont want to create a file for reading.
Check if the file exists before reading with File.Exists

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