Xml Saving and Loading Problems

In my game, I have added a remember function for my login/register thingy. The code is as follows: Here is my LoginInfo class for the XmlRoot

 @XmlRoot("LoginInfo")
 public class LoginInfo{
     
     @XmlAttribute("username")
     public var username : String = "";
 
     @XmlAttribute("password")
     public var password : String = "";
 
     @XmlAttribute("rememeber")
     public var remember : boolean = false;
 }

And to use this I have a function called Save() and Load()

 function Save(path : String){
     var serializer : XmlSerializer = new XmlSerializer(LoginInfo);
     var stream : Stream = new FileStream(path, FileMode.Create);
     serializer.Serialize(stream, loginInfo);
     stream.Close();
 }
 
 function Load(path : String) : LoginInfo{
     var serializer : XmlSerializer = new XmlSerializer(LoginInfo);
     var stream : Stream = new FileStream(path, FileMode.Open);
     var result : LoginInfo = serializer.Deserialize(stream) as LoginInfo;
     stream.Close();
     return result;
 }

This works perfectly for the editor game window thing, but when I play it with a build it does not seem to work. Also in the editor console, sometimes this line comes up:

 ms_IDToPointer->find (obj->GetInstanceID ()) == ms_IDToPointer->end ()

Any help is appreciated, william9518