myeclipse add hibernate capabilities 时出现异常 the chosen operation is not currently available

在创建 hibernate Configuration File 时出现异常 :
the selected wizard could not be started
Reason :
Plug-in com.genuitec.eclipse.hibernate was unable to load class
com.genuitec.eclipse.hibernate.wizards.NetHibernateConfigWizard
我在别的板块也发了这个帖子 不知道合不合规矩，没办法，困扰我很长一阵子了，请大家帮个忙吧 谢谢了