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java.lang.ClassCastException: org.netbeans.mdr.persistence.btreeimpl.btreestorage.NormalBtreeExtent cannot be cast to org.netbeans.mdr.persistence.btreeimpl.btreestorage.DeletedBtreeExtent	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDataFile.getDeletedExtent(BtreeDataFile.java:528)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDataFile.getNormalExtent(BtreeDataFile.java:921)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDataFile.put(BtreeDataFile.java:332)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDataFile.put(BtreeDataFile.java:314)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDatabase.addRecord(BtreeDatabase.java:927)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDatabase.save(BtreeDatabase.java:543)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeDatabase.commitChanges(BtreeDatabase.java:447)	at org.netbeans.mdr.persistence.btreeimpl.btreestorage.BtreeStorage.commitChanges(BtreeStorage.java:325)	at org.netbeans.mdr.storagemodel.MdrStorage.save(MdrStorage.java:576)	at org.netbeans.mdr.storagemodel.MdrStorage.commit(MdrStorage.java:547)	at org.netbeans.mdr.util.TransactionMutex.end(TransactionMutex.java:83)	at org.netbeans.mdr.util.MultipleReadersMutex.leave(MultipleReadersMutex.java:179)	at org.netbeans.mdr.NBMDRepositoryImpl.endTrans(NBMDRepositoryImpl.java:255)	at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:508)	at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:297)	at org.netbeans.mdr.NBMDRepositoryImpl.createExtent(NBMDRepositoryImpl.java:285)	at org.pentaho.pms.core.CWM.(CWM.java:396)	at org.pentaho.pms.core.CWM.getInstance(CWM.java:525)	at org.pentaho.pms.core.CWM.getInstance(CWM.java:497)	at org.pentaho.pms.factory.SchemaSaveProgressDialog$1.run(SchemaSaveProgressDialog.java:96)	at org.eclipse.jface.operation.ModalContext.runInCurrentThread(ModalContext.java:369)	at org.eclipse.jface.operation.ModalContext.run(ModalContext.java:313)	at org.eclipse.jface.dialogs.ProgressMonitorDialog.run(ProgressMonitorDialog.java:479)	at org.pentaho.pms.factory.SchemaSaveProgressDialog.open(SchemaSaveProgressDialog.java:152)	at org.pentaho.pms.editor.MetaEditor.save(MetaEditor.java:2931)	at org.pentaho.pms.editor.MetaEditor.saveFile(MetaEditor.java:2890)	at org.pentaho.pms.editor.MetaEditor$13.handleEvent(MetaEditor.java:486)	at org.eclipse.swt.widgets.EventTable.sendEvent(EventTable.java:66)	at org.eclipse.swt.widgets.Widget.sendEvent(Widget.java:928)	at org.eclipse.swt.widgets.Display.runDeferredEvents(Display.java:3465)	at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:3079)	at org.pentaho.pms.editor.MetaEditor.readAndDispatch(MetaEditor.java:805)	at org.pentaho.pms.editor.MetaEditor.main(MetaEditor.java:3566)