Issue loading serialized config.dat from persistant Data

So Im trying to save a config file to persistantData im not getting any errors but my loading is returning "null" and im not sure why. Im new to serializing. I have 3 classes.

1. config Data Class

2. Static Dictionary

3. Loading Class

Heres my data and dictionary

 public class config : MonoBehaviour 
 {
     public int id;
     public string textVal;
     public int intVal;
     public float floatVal;
     public bool boolVal;
 }
 
 //this class stores all the data
 public static class ConfigData 
 {
     public static SortedDictionary<string ,config> configData = new SortedDictionary<string , config>();
 }

compling with no errors. Then theres my saving and file check methods.

 //check if file exists and preform appropriate action
 public UILabel txt;
     // Use this for initialization
     void Start () 
     {        
         configFile=ConfigData.configData;
         if(!File.Exists(Application.persistentDataPath + "/config.dat"))
         {
             Debug.Log("config file does not exist, It will be created");
             txt.text = "Creating Config file";    
             createConfig();        
         }
         else
         {
             txt.text = "Loading Config File";    
             loadConfig();
             //Binary formatter for loading back
             
         }
     }

again no errors and it identifies if the file exists correctly. I save as follows.

 //create the config file
     void createConfig()
     {
         var b=new BinaryFormatter();
         var f=File.Create(Application.persistentDataPath + "/config.dat");
         createData();
         b.Serialize(f,ConfigData.configData);
         f.Close();
     }    
 
     //create the data
     void createData()
     {
         config tempconfig=new config();
         tempconfig.id=0;
         tempconfig.textVal="0.0.1";
         ConfigData.configData.Add("Version" , tempconfig);
     }

and finally here's loading

 void loadConfig()
     {
         var b = new BinaryFormatter();
         //Get the file
         var f = File.Open(Application.persistentDataPath + "/config.dat", FileMode.Open);
         ConfigData.configData = b.Deserialize(f) as SortedDictionary<string, config>;
         f.Close();
         Debug.Log(ConfigData.configData);
     }

I checked the config.dat file and I think its saving properly

ÿÿÿÿ

verson 0.0.1

but i cant be 100% certain as its serialized. but this tell me it has to be in how im loading the data. Any Help is greatly appreciated!