使用koala，成功添加了一个表格的CRUD，进入这个表格的Mykoalatb-?报错

有一个mysql数据库的表，如下：

mysql> show create table mykoalatb;
+-----------+-------------------------------------------------------------------
--------------------------------------------------------------------------------
-------------+
| Table     | Create Table


             |
+-----------+-------------------------------------------------------------------
--------------------------------------------------------------------------------
-------------+
| mykoalatb | CREATE TABLE `mykoalatb` (
  `id` int(11) NOT NULL DEFAULT '0',
  `name` varchar(20) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 |
+-----------+-------------------------------------------------------------------
--------------------------------------------------------------------------------
-------------+
1 row in set (0.00 sec)

成功进行koala CRUD过后，在浏览器中输入：http://localhost:8080/pages/koaladb/Mykoalatb-list.jsp 报如下的错误

java.lang.IllegalArgumentException: org.hibernate.hql.internal.ast.QuerySyntaxException: Mykoalatb is not mapped [select count(*)  from Mykoalatb _mykoalatb   where 1=1 ]

at org.hibernate.ejb.AbstractEntityManagerImpl.convert(AbstractEntityManagerImpl.java:1364)