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java.lang.NullPointerException: 	at java.util.TreeMap.getEntry(TreeMap.java:324)	at java.util.TreeMap.get(TreeMap.java:255)	at sf.netbeans.nbxdoclet.hibernate.HibernateConfig.getDialect(HibernateConfig.java:123)	at sf.netbeans.nbxdoclet.hibernate.HibernateCreateTableAction$1.run(HibernateCreateTableAction.java:43)	at org.openide.util.RequestProcessor$Task.run(RequestProcessor.java:499)	at org.openide.util.RequestProcessor$Processor.run(RequestProcessor.java:932)