Program: 137726
Project: 137726
Buggy source:
@Override public void run(){
  try {
    IFile duplicateObject=null;
    for (    final IRepositoryNode node : nodeArray) {
      if (node != null) {
        IRepositoryViewObject viewObject=node.getObject();
        ModelElement modelElement=null;
        if (viewObject != null) {
          modelElement=PropertyHelper.getModelElement(viewObject.getProperty());
        }
        if (modelElement == null || modelElement.eResource() == null || modelElement instanceof UDIndicatorDefinition && UDIHelper.getUDICategory(modelElement) == null) {
          BusinessException createBusinessException=ExceptionFactory.getInstance().createBusinessException(viewObject);
          throw createBusinessException;
        }
        final IDuplicateHandle handle=ActionHandleFactory.createDuplicateHandle(node);
        if (handle != null) {
          String initLabel=generateInitialLabel(node);
          InputDialog dialog=new InputDialog(null,DefaultMessagesImpl.getString("String_Node_Str"),DefaultMessagesImpl.getString("String_Node_Str"),initLabel,new IInputValidator(){
            public String isValid(            String newText){
              if (PropertyHelper.existDuplicateName(newText,null,node.getContentType())) {
                return DefaultMessagesImpl.getString("String_Node_Str");
              }
              return null;
            }
          }
);
          if (dialog.open() == Window.OK) {
            String newLabel=dialog.getValue();
            if (ERepositoryObjectType.TDQ_USERDEFINE_INDICATORS.equals(node.getProperties(IRepositoryNode.EProperties.LABEL))) {
              duplicateObject=handle.duplicate(newLabel);
            }
 else {
              ReturnCode rc=handle.validDuplicated();
              if (rc.isOk()) {
                duplicateObject=handle.duplicate(newLabel);
              }
 else {
                MessageDialog.openError(null,DefaultMessagesImpl.getString("String_Node_Str"),rc.getMessage());
              }
            }
          }
        }
      }
    }
    CorePlugin.getDefault().refreshWorkSpace();
    if (duplicateObject != null) {
      selectAndReveal(duplicateObject);
    }
  }
 catch (  BusinessException e) {
    ExceptionHandler.process(e,Level.FATAL);
  }
}

Fixed version (ground truth):
@Override public void run(){
  try {
    IFile duplicateObject=null;
    for (    final IRepositoryNode node : nodeArray) {
      if (node != null) {
        IRepositoryViewObject viewObject=node.getObject();
        ModelElement modelElement=null;
        if (viewObject != null) {
          modelElement=PropertyHelper.getModelElement(viewObject.getProperty());
        }
        if (viewObject == null || viewObject.getProperty() == null || viewObject.getProperty().getItem() == null) {
          BusinessException createBusinessException=ExceptionFactory.getInstance().createBusinessException("String_Node_Str");
          throw createBusinessException;
        }
        Item item=viewObject.getProperty().getItem();
        if ((modelElement == null || modelElement.eResource() == null || modelElement.getName() == null || modelElement instanceof UDIndicatorDefinition && UDIHelper.getUDICategory(modelElement) == null) && !(item instanceof TDQFileItem)) {
          BusinessException createBusinessException=ExceptionFactory.getInstance().createBusinessException(viewObject);
          throw createBusinessException;
        }
        final IDuplicateHandle handle=ActionHandleFactory.createDuplicateHandle(node);
        if (handle != null) {
          String initLabel=generateInitialLabel(node);
          InputDialog dialog=new InputDialog(null,DefaultMessagesImpl.getString("String_Node_Str"),DefaultMessagesImpl.getString("String_Node_Str"),initLabel,new IInputValidator(){
            public String isValid(            String newText){
              if (PropertyHelper.existDuplicateName(newText,null,node.getContentType())) {
                return DefaultMessagesImpl.getString("String_Node_Str");
              }
              return null;
            }
          }
);
          if (dialog.open() == Window.OK) {
            String newLabel=dialog.getValue();
            if (ERepositoryObjectType.TDQ_USERDEFINE_INDICATORS.equals(node.getProperties(IRepositoryNode.EProperties.LABEL))) {
              duplicateObject=handle.duplicate(newLabel);
            }
 else {
              ReturnCode rc=handle.validDuplicated();
              if (rc.isOk()) {
                duplicateObject=handle.duplicate(newLabel);
              }
 else {
                MessageDialog.openError(null,DefaultMessagesImpl.getString("String_Node_Str"),rc.getMessage());
              }
            }
          }
        }
      }
    }
    CorePlugin.getDefault().refreshWorkSpace();
    if (duplicateObject != null) {
      selectAndReveal(duplicateObject);
    }
  }
 catch (  BusinessException e) {
    ExceptionHandler.process(e,Level.FATAL);
  }
}