My webMethods Server doesn't start up

I have installed 7.1 everything is fine other than the MWS. I am unable to start the server. the error is as follows

2007-11-21 10:40:56 EST (Framework : INFO) - No registered exception delegate
2007-11-21 10:40:56 EST (Framework : FATAL) - [POP.001.0002] A “java.lang.NullPointerException” occurred with the Message “at com.webmethods.portal.service.meta2.impl.RelationService.loadRelations(”

I would suggest dropping and re-creating MWS database schema using db configurator