Program: 3036
Project: 3036
Buggy source:
/** 
 * @param object The object to send
 * @param a Needs {@link Activity} to get the path of the content?
 */
public static void send(Object object,Activity a){
  GsonBuilder gsonB=new GsonBuilder();
  gsonB.registerTypeAdapter(Experiences.class,new ExperiencesSerializer());
  gsonB.registerTypeAdapter(Event.class,new EventSerializer());
  Gson gson=gsonB.create();
  String jsonString="String_Node_Str";
  try {
    jsonString=gson.toJson(object,object.getClass());
  }
 catch (  Exception e) {
    Log.e("String_Node_Str",e.getMessage());
  }
  System.out.println("String_Node_Str" + jsonString);
  Uploader.putToGAE(object,jsonString);
  System.out.println("String_Node_Str");
  if (object instanceof Experiences) {
    if (((Experiences)object).getExperiences() != null) {
      for (      Experience ex : ((Experiences)object).getExperiences()) {
        if (((Experience)ex).getEvents() != null) {
          for (          BaseEvent baseEvent : ex.getEvents()) {
            Event event=(Event)baseEvent;
            for (            EventItem eventI : event.getEventItems()) {
              if (eventI instanceof SimplePicture) {
                Uploader.uploadFile(Utilities.IMAGE_STORAGE_FILEPATH + ((SimplePicture)eventI).getPictureFilename(),((SimplePicture)eventI).getPictureFilename());
              }
            }
          }
        }
      }
    }
  }
 else   if (object instanceof Event) {
    for (    EventItem eventI : ((Event)object).getEventItems()) {
      if (eventI instanceof SimplePicture) {
        Uploader.uploadFile(Utilities.IMAGE_STORAGE_FILEPATH + ((SimplePicture)eventI).getPictureFilename(),((SimplePicture)eventI).getPictureFilename());
      }
    }
  }
}

Fixed version (ground truth):
/** 
 * @param object The object to send
 * @param a Needs {@link Activity} to get the path of the content?
 */
public static void send(Object object,Activity a){
  GsonBuilder gsonB=new GsonBuilder();
  gsonB.registerTypeAdapter(Experiences.class,new ExperiencesSerializer());
  Gson gson=gsonB.create();
  String jsonString="String_Node_Str";
  try {
    jsonString=gson.toJson(object,object.getClass());
  }
 catch (  Exception e) {
    Log.e("String_Node_Str",e.getMessage());
  }
  System.out.println("String_Node_Str" + jsonString);
  Uploader.putToGAE(object,jsonString);
  System.out.println("String_Node_Str");
  if (object instanceof Experiences) {
    if (((Experiences)object).getExperiences() != null) {
      for (      Experience ex : ((Experiences)object).getExperiences()) {
        if (((Experience)ex).getEvents() != null) {
          for (          BaseEvent baseEvent : ex.getEvents()) {
            if (baseEvent.getEventItems() != null) {
              for (              EventItem eventI : baseEvent.getEventItems()) {
                if (eventI instanceof SimplePicture) {
                  Uploader.uploadFile(Utilities.IMAGE_STORAGE_FILEPATH + ((SimplePicture)eventI).getPictureFilename(),((SimplePicture)eventI).getPictureFilename());
                }
              }
            }
          }
        }
      }
    }
  }
 else   if (object instanceof Event) {
    for (    EventItem eventI : ((Event)object).getEventItems()) {
      if (eventI instanceof SimplePicture) {
        Uploader.uploadFile(Utilities.IMAGE_STORAGE_FILEPATH + ((SimplePicture)eventI).getPictureFilename(),((SimplePicture)eventI).getPictureFilename());
      }
    }
  }
}