Jsf 2.0 + eclipse

pessoal

to querendo fazer funcionar o jsf 2.0 no eclipse, mas ta dando esse erro

C:/glassfish/lib/jhall.jar;C:\glassfish\lib\appserv-launch.jar com.sun.enterprise.server.PELaunch start Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/enterprise/util/i18n/StringManager at com.sun.enterprise.server.PEMain.<clinit>(PEMain.java:117) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25) at java.lang.reflect.Method.invoke(Method.java:592) at com.sun.enterprise.server.PELaunch.main(PELaunch.java:272)

alguem ja viu um erro semelhante e pode me ajudar :shock: