XMLSerializer does not save unless I open Monodevelop?

Hi people,

I've ran into a something very weird. I have a GameManager that saves the data to XML when the app is closed. However, I noticed that when I had Monodevelop on, it works like what I expected. But when Monodevelop is not running, the values didn't get saved into my XML file. Has anyone else encountered anything like this before?

 void OnApplicationQuit() 
     {
 
         foreach(BuildingManager buildingLoaded in buildingManagerList)
         {
             bXML.ID = buildingLoaded.ID;
             bXML.name = buildingLoaded.buildingName.text;
             bXML.unlocked = buildingLoaded.unlocked;
             bXML.productionPC = buildingLoaded.idleEarning;
             bXML.productionTime = buildingLoaded.timer;
             buildingContainer.buildingList.RemoveAt(j);
             buildingContainer.buildingList.Insert(j, bXML);         //Overwrite value on list
         }
     
 
         XmlSerializer serializer = new XmlSerializer(typeof(BuildingContainer));
 
         FileStream stream = new FileStream(Application.dataPath + "/Resources/" + pathToSave, FileMode.Create);
 
         serializer.Serialize(stream, buildingContainer);
 
         stream.Close();
 
         Debug.Log("saved");
     }

I'm sure that my Load was correct as it was able to read in values correctly and display it in the game. I used the standard practise to save the file; Create file, Write file, Close file.

Anyone?