XMLSerializer

I am trying to read/write an xml file to store some data for my game. Here is the object i am trying to store:

 public struct EndRaceData
 {
         // Data used to display section by section data
         public List<SpeedRecord> speedRecords { get; set; }
         // Data used for making a map
         public List<KeyValuePair<String,SpeedRecord>>recordsByname { get; set; }
         // Taken from Datatracker.instance
         public List<KeyValuePair<String,List<DataRecorder.GPSPoint>>> pointsPerChallenge { get; set; }
         // Taken from DataRecorder.instance
         public List<SpeedSegment> averageSpeeds { get; set; }
         // Taken from IPlayer..
         public float caloriesburnt { get; set; }
         // Taken from Datatracker.instance
         public float topSpeed { get; set; }
         // taken from Datatracker.instance
         public float points { get; set; }
         // taken from Datatracker.instance
         public string difficulty { get; set; }
         // taken from Datatracker.instance
         public float completedPercentage { get; set; }
         // challenge-specific data
         public int passedChallenges { get; set; }
         // Datatracker.instance
         public int failedChallenges { get; set; }
         // Datatracker.instance
         public int  fastChallengesPassed { get; set; }
         // Datatracker.instance
         public int slowChallengesPassed { get; set; }
         // Datatracker.instance
         public int keepChallengesPassed{ get; set; }
         // Datatracker.instance
         public string startTime { get; set; }
         // Datatracker.instance
         public string endTime   { get; set; }
 
 
         public float distanceTravelled { get; set; }
         
     public string filePath {get; set;}
 }

Where SpeedRecord is:

 public struct SpeedRecord
 {
         public float speed;
         public float distance;
         public string name;
         public string sectionStartTime, sectionEndTime;
 
         public SpeedRecord (string name, float speed, float distance, DateTime startTime, DateTime endTime)
         {
                 this.speed = speed;
                 this.name = name;
                 this.distance = distance;
                 this.sectionStartTime = startTime.ToString ();
                 this.sectionEndTime = endTime.ToString ();
         }
 
         public override string ToString ()
         {
                 return string.Format ("{0}\r\nAVG speed : {1} km/h\r\nDist : {2} m\r\nTime : {3} -> {4}\r\n", this.name, this.speed, this.distance, this.sectionStartTime, this.sectionEndTime);        
         }
 }

SpeedSegment is:

 public struct SpeedSegment
 {
         public float speed;
         public float time;
 }

and finally GPSPoint is:

 public struct GPSPoint
     {
             public float lat;
             public float lon;
             public float accuracy;
             public float time;
     
             public GPSPoint (float lat, float lon, float acc, float time)
             {
                     this.lat = lat;
                     this.lon = lon;
                     this.accuracy = acc;
                     this.time = time;
             }
     }

The issue I am having is that everything works perfectly on all platforms except for iOS. I can generate my XML files without any issues on all platforms, but when I try to read them on iOS, I get the following error:

XmlException: Document element did not appear. Line 1, position 1.

at Mono.Xml2.XmlTextReader.Read () [0x00000] in :0 at System.Xml.XmlTextReader.Read () [0x00000] in :0 at System.Xml.XmlReader.MoveToContent () [0x00000] in :0 at System.Xml.Serialization.XmlSerializationReaderInterpreter.ReadRoot () [0x00000] in :0 at System.Xml.Serialization.XmlSerializer.Deserialize (System.Xml.Serialization.XmlSerializationReader reader) [0x00000] in :0 Any suggestions as to what might be causing this? Im guessing it is something specific to iOS since the solution works fine on Android, Standalone and inside the editor.