Program: 121512
Project: 121512
Buggy source:
/** 
 * Adding the page to the wizard.
 */
@Override public void addPages(){
  if (isToolbar) {
    pathToSave=null;
  }
  propertiesWizardPage=new Step0WizardPage(connectionProperty,pathToSave,JSONRepositoryNodeType.JSON,!isRepositoryObjectEditable(),creation);
  jsonFileSelectPage=new JSONFileSelectWizardPage(creation,connectionItem,isRepositoryObjectEditable(),existingNames);
  setDefaultPageImageDescriptor(ImageProvider.getImageDesc(JSONImage.JSON_ICON));
  if (connection != null) {
    List schemas=connection.getSchema();
    if (!schemas.isEmpty()) {
      JSONXPathLoopDescriptor currentSchema=(JSONXPathLoopDescriptor)schemas.get(0);
      oldAbstractQueryPath=currentSchema.getAbsoluteXPathQuery();
    }
  }
  if (creation) {
    setWindowTitle("String_Node_Str");
    propertiesWizardPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    propertiesWizardPage.setDescription("String_Node_Str");
    addPage(propertiesWizardPage);
    propertiesWizardPage.setPageComplete(false);
    jsonFileSelectPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    jsonFileSelectPage.setDescription("String_Node_Str");
    addPage(jsonFileSelectPage);
    jsonFileSelectPage.setPageComplete(true);
  }
 else {
    setWindowTitle("String_Node_Str");
    propertiesWizardPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    propertiesWizardPage.setDescription("String_Node_Str");
    addPage(propertiesWizardPage);
    jsonFileSelectPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    jsonFileSelectPage.setDescription("String_Node_Str");
    addPage(jsonFileSelectPage);
    jsonFileSelectPage.setPageComplete(true);
  }
}

Fixed version (ground truth):
/** 
 * Adding the page to the wizard.
 */
@Override public void addPages(){
  if (isToolbar) {
    pathToSave=null;
  }
  propertiesWizardPage=new Step0WizardPage(connectionProperty,pathToSave,JSONRepositoryNodeType.JSON,!isRepositoryObjectEditable(),creation);
  jsonFileSelectPage=new JSONFileSelectWizardPage(creation,connectionItem,isRepositoryObjectEditable(),existingNames);
  setDefaultPageImageDescriptor(ImageProvider.getImageDesc(JSONImage.JSON_ICON32));
  if (connection != null) {
    List schemas=connection.getSchema();
    if (!schemas.isEmpty()) {
      JSONXPathLoopDescriptor currentSchema=(JSONXPathLoopDescriptor)schemas.get(0);
      oldAbstractQueryPath=currentSchema.getAbsoluteXPathQuery();
    }
  }
  if (creation) {
    setWindowTitle("String_Node_Str");
    propertiesWizardPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    propertiesWizardPage.setDescription("String_Node_Str");
    addPage(propertiesWizardPage);
    propertiesWizardPage.setPageComplete(false);
    jsonFileSelectPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    jsonFileSelectPage.setDescription("String_Node_Str");
    addPage(jsonFileSelectPage);
    jsonFileSelectPage.setPageComplete(true);
  }
 else {
    setWindowTitle("String_Node_Str");
    propertiesWizardPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    propertiesWizardPage.setDescription("String_Node_Str");
    addPage(propertiesWizardPage);
    jsonFileSelectPage.setTitle("String_Node_Str" + "String_Node_Str" + "String_Node_Str"+ "String_Node_Str");
    jsonFileSelectPage.setDescription("String_Node_Str");
    addPage(jsonFileSelectPage);
    jsonFileSelectPage.setPageComplete(true);
  }
}