Program: 77784
Project: 77784
Buggy source:
@Override public void handle(MouseEvent event){
  Profile.PairCameraPosition currentCamPos=(Profile.PairCameraPosition)CamPosCheckbox.this.getTableView().getItems().get(CamPosCheckbox.this.getIndex());
  try {
    if (cellCheckbox.isSelected()) {
      if (checkboxTyp.equals("String_Node_Str")) {
        if (currentCamPos.getPosition() != null)         pservice.editPairCameraPosition(currentCamPos,currentCamPos.getCamera().getId(),currentCamPos.getPosition().getId(),true);
 else {
          cellCheckbox.setSelected(false);
          Alert alert=new Alert(Alert.AlertType.ERROR);
          alert.setTitle("String_Node_Str");
          alert.setHeaderText("String_Node_Str");
          alert.setContentText("String_Node_Str");
          alert.initOwner(primaryStage);
          alert.show();
        }
      }
 else {
        int posID;
        if (currentCamPos.getPosition() != null)         posID=currentCamPos.getPosition().getId();
 else         posID=pservice.getAllPositions().get(0).getId();
        currentCamPos=pservice.addPairCameraPosition(selectedProfile.get(0).getId(),currentCamPos.getCamera().getId(),posID,false);
        kamposList.clear();
        kamposList.addAll(pservice.getAllPairCamerasWithPositionByProfile(selectedProfile.get(0).getId()));
        getTableView().setItems(kamposList);
      }
    }
 else {
      if (checkboxTyp.equals("String_Node_Str")) {
        pservice.editPairCameraPosition(currentCamPos,currentCamPos.getCamera().getId(),currentCamPos.getPosition().getId(),false);
      }
 else {
        pservice.erasePairCameraPosition(currentCamPos);
        currentCamPos=new Profile.PairCameraPosition(selectedProfile.get(0).getId(),currentCamPos.getCamera(),null,false);
        kamposList.clear();
        kamposList.addAll(pservice.getAllPairCamerasWithPositionByProfile(selectedProfile.get(0).getId()));
        getTableView().setItems(kamposList);
      }
    }
    LOGGER.debug("String_Node_Str" + checkboxTyp + "String_Node_Str"+ currentCamPos.getId()+ "String_Node_Str"+ cellCheckbox.isSelected()+ "String_Node_Str"+ selectedProfile.get(0).getId());
  }
 catch (  ServiceException e) {
    LOGGER.debug("String_Node_Str" + selectedProfile.get(0).getId(),e);
  }
}

Fixed version (ground truth):
@Override public void handle(MouseEvent event){
  Profile.PairCameraPosition currentCamPos=(Profile.PairCameraPosition)CamPosCheckbox.this.getTableView().getItems().get(CamPosCheckbox.this.getIndex());
  try {
    if (cellCheckbox.isSelected()) {
      if (checkboxTyp.equals("String_Node_Str")) {
        if (currentCamPos.getPosition() != null)         pservice.editPairCameraPosition(currentCamPos,currentCamPos.getCamera().getId(),currentCamPos.getPosition().getId(),true);
 else {
          cellCheckbox.setSelected(false);
          Alert alert=new Alert(Alert.AlertType.ERROR);
          alert.setTitle("String_Node_Str");
          alert.setHeaderText("String_Node_Str");
          alert.setContentText("String_Node_Str");
          alert.initOwner(primaryStage);
          alert.show();
        }
      }
 else {
        int posID;
        if (currentCamPos.getPosition() != null)         posID=currentCamPos.getPosition().getId();
 else         posID=pservice.getAllPositions().get(0).getId();
        currentCamPos=pservice.addPairCameraPosition(selectedProfile.get(0).getId(),currentCamPos.getCamera().getId(),posID,false);
        kamposList.clear();
        kamposList.addAll(pservice.getAllPairCamerasWithPositionByProfile(selectedProfile.get(0).getId()));
        getTableView().setItems(kamposList);
      }
    }
 else {
      if (checkboxTyp.equals("String_Node_Str")) {
        pservice.editPairCameraPosition(currentCamPos,currentCamPos.getCamera().getId(),currentCamPos.getPosition().getId(),true);
      }
 else {
        pservice.erasePairCameraPosition(currentCamPos);
        currentCamPos=new Profile.PairCameraPosition(selectedProfile.get(0).getId(),currentCamPos.getCamera(),null,false);
        kamposList.clear();
        kamposList.addAll(pservice.getAllPairCamerasWithPositionByProfile(selectedProfile.get(0).getId()));
        getTableView().setItems(kamposList);
      }
    }
    LOGGER.debug("String_Node_Str" + checkboxTyp + "String_Node_Str"+ currentCamPos.getId()+ "String_Node_Str"+ cellCheckbox.isSelected()+ "String_Node_Str"+ selectedProfile.get(0).getId());
  }
 catch (  ServiceException e) {
    LOGGER.debug("String_Node_Str" + selectedProfile.get(0).getId(),e);
  }
}