MWS Startup Error

Hello all i m having the following error message as I start MWS
if anyone knows about this please reply

009-04-07 17:18:44 IST (Framework : FATAL) - [POP.001.0002] A “java.lang.NullPointerException” occurred with the Message “at com.webmethods.portal.service.meta2.impl.MetaManager.setPortalSystemState(MetaManager.java:188)”
java.lang.NullPointerException
at com.webmethods.portal.service.meta2.impl.MetaManager.setPortalSystemState(MetaManager.java:188)
at com.webmethods.portal.service.meta2.impl.MetaManager.init(MetaManager.java:60)
at com.webmethods.portal.system.init.impl.DefaultPhase.initComponent(DefaultPhase.java:99)
at com.webmethods.portal.system.impl.BaseProvider.initComponents(BaseProvider.java:509)
at com.webmethods.portal.system.impl.BaseProvider.init(BaseProvider.java:125)
at com.webmethods.portal.system.init.impl.DefaultPhase.init(DefaultPhase.java:44)
at com.webmethods.portal.system.init.impl.DefaultPhaseProvider.initComponent(DefaultPhaseProvider.java:257)
at com.webmethods.portal.system.impl.BaseProvider.initComponents(BaseProvider.java:509)
at com.webmethods.portal.system.impl.BaseProvider.init(BaseProvider.java:125)
at com.webmethods.portal.system.init.impl.DefaultPhaseProvider.initializePhases(DefaultPhaseProvider.java:89)
at com.webmethods.portal.system.PortalSystem.init(PortalSystem.java:867)
at com.webmethods.portal.system.PortalSystem.main(PortalSystem.java:826)
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:585)
at com.webmethods.portal.system.start.Main.start(Main.java:126)
at com.webmethods.portal.system.start.Main.main(Main.java:47)

Thanks
Prashant Raghava