SerializationException Unity中BinaryFormatter反序列化错误

SerializationException: The ObjectManager found an invalid number of fixups. This usually indicates a problem in the Formatter.

下面是错误示范：
保存二进制：

			AssetBundleConfig config = new AssetBundleConfig();
        //string bytePath = "Assets/GameData/Data/ABData/AssetBundleConfig.bytes";
        //FileStream fs = new FileStream(bytePath, FileMode.OpenOrCreate, FileAccess.ReadWrite, FileShare.ReadWrite);
        //BinaryFormatter bf = new BinaryFormatter();
        //bf.Serialize(fs, config);
        //fs.Close();

读取二进制：

  BinaryFormatter bf = new BinaryFormatter();
        MemoryStream stream = new MemoryStream(textAsset.bytes);
        AssetBundleConfig config = (AssetBundleConfig)bf.Deserialize(stream);
        stream.Close();

最后改进方案：

//保存为二进制
private static void SaveBin(AssetBundleConfig config)
    {
        try
        {
            string path = "Assets/GameData/Data/ABData/AssetBundleConfig";
            FileStream file = null;
            BinaryFormatter bf = new BinaryFormatter();
            file = File.Open(path, FileMode.Create);
            bf.Serialize(file, config);
            file.Close();
        }
        catch (System.Exception ex)
        {
            Debug.LogError("存储失败----" + ex.Message);
        }
        //string.IsNullOrEmpty(path):基本等价与path==null||path.length==0::没用到，但想到。

    }
    // 读取二进制
        public AssetBundleConfig OpenBin()
    {
        string path = "Assets/GameData/Data/ABData/AssetBundleConfig";
        AssetBundleConfig config = null;
        FileStream file = null;
        BinaryFormatter bf = new BinaryFormatter();
        file = File.Open(path, FileMode.Open);
        config = (AssetBundleConfig)bf.Deserialize(file);
        file.Close();
        return config;
    }