hibernate - Unexpected error during MassIndexer operation -

i using following code create hibernate search index:

        ogmconfiguration cfgogm=new ogmconfiguration();         cfgogm.configure("hibernate.cfg.xml");         serviceregistry=new serviceregistrybuilder().applysettings(cfgogm.getproperties()).buildserviceregistry();         sessionfactory=cfgogm.buildsessionfactory(serviceregistry);                  session session=sessionfactory.getcurrentsession();           fulltextsession fulltextsession = search.getfulltextsession(session);         fulltextsession.createindexer(user.class).startandwait(); 

but thi sexception:

error: hsearch000058: hsearch000116: unexpected error during massindexer operation java.lang.nullpointerexception     @ org.hibernate.engine.jdbc.internal.proxy.abstractstatementproxyhandler.<init>(abstractstatementproxyhandler.java:57)     @ org.hibernate.engine.jdbc.internal.proxy.preparedstatementproxyhandler.<init>(preparedstatementproxyhandler.java:50)     @ org.hibernate.engine.jdbc.internal.proxy.proxybuilder.buildpreparedstatement(proxybuilder.java:187)     @ org.hibernate.engine.jdbc.internal.proxy.connectionproxyhandler.postprocess(connectionproxyhandler.java:167)     @ org.hibernate.engine.jdbc.internal.proxy.connectionproxyhandler.continueinvocation(connectionproxyhandler.java:139)     @ org.hibernate.engine.jdbc.internal.proxy.abstractproxyhandler.invoke(abstractproxyhandler.java:81)     @ com.sun.proxy.$proxy17.preparestatement(unknown source)     @ org.hibernate.engine.jdbc.internal.statementpreparerimpl$5.doprepare(statementpreparerimpl.java:147)     @ org.hibernate.engine.jdbc.internal.statementpreparerimpl$statementpreparationtemplate.preparestatement(statementpreparerimpl.java:166)     @ org.hibernate.engine.jdbc.internal.statementpreparerimpl.preparequerystatement(statementpreparerimpl.java:145)     @ org.hibernate.loader.loader.preparequerystatement(loader.java:1720)     @ org.hibernate.loader.loader.executequerystatement(loader.java:1697)     @ org.hibernate.loader.loader.doquery(loader.java:832)     @ org.hibernate.loader.loader.doqueryandinitializenonlazycollections(loader.java:293)     @ org.hibernate.loader.loader.dolist(loader.java:2382)     @ org.hibernate.loader.loader.dolist(loader.java:2368)     @ org.hibernate.loader.loader.listignorequerycache(loader.java:2198)     @ org.hibernate.loader.loader.list(loader.java:2193)     @ org.hibernate.loader.criteria.criterialoader.list(criterialoader.java:122)     @ org.hibernate.internal.statelesssessionimpl.list(statelesssessionimpl.java:657)     @ org.hibernate.internal.criteriaimpl.list(criteriaimpl.java:374)     @ org.hibernate.internal.criteriaimpl.uniqueresult(criteriaimpl.java:396)     @ org.hibernate.search.batchindexing.impl.identifierproducer.loadallidentifiers(identifierproducer.java:130)     @ org.hibernate.search.batchindexing.impl.identifierproducer.intransactionwrapper(identifierproducer.java:115)     @ org.hibernate.search.batchindexing.impl.identifierproducer.run(identifierproducer.java:96)     @ org.hibernate.search.batchindexing.impl.optionallywrapinjtatransaction.run(optionallywrapinjtatransaction.java:135)     @ java.util.concurrent.threadpoolexecutor.runworker(threadpoolexecutor.java:1145)     @ java.util.concurrent.threadpoolexecutor$worker.run(threadpoolexecutor.java:615)     @ java.lang.thread.run(thread.java:722)  aug 28, 2013 12:31:10 pm org.hibernate.search.impl.simpleindexingprogressmonitor indexingcompleted info: hsearch000028: reindexed 0 entities 

i dont know why exeption?could please me solve problem