Exception in thread "Thread-2" java.lang.AbstractMethodError:
org.apache.xerces.dom.DocumentImpl.getXmlStandalone()Z
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.setDocumentInfo(DOM2TO.java:377)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:131)
at com.sun.org.apache.xalan.internal.xsltc.trax.DOM2TO.parse(DOM2TO.java:98)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transformIdentity(TransformerImpl.java:702)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:746)
at com.sun.org.apache.xalan.internal.xsltc.trax.TransformerImpl.transform(TransformerImpl.java:359)
at java.util.prefs.XmlSupport.writeDoc(XmlSupport.java:276)
at java.util.prefs.XmlSupport.exportMap(XmlSupport.java:355)
at java.util.prefs.FileSystemPreferences$7.run(FileSystemPreferences.java:622)
at java.util.prefs.FileSystemPreferences$7.run(FileSystemPreferences.java:615)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.prefs.FileSystemPreferences.writeBackCache(FileSystemPreferences.java:614)
at java.util.prefs.FileSystemPreferences.syncSpiPrivileged(FileSystemPreferences.java:801)
at java.util.prefs.FileSystemPreferences.access$2300(FileSystemPreferences.java:50)
at java.util.prefs.FileSystemPreferences$12.run(FileSystemPreferences.java:771)
at java.util.prefs.FileSystemPreferences$12.run(FileSystemPreferences.java:769)
at java.security.AccessController.doPrivileged(Native Method)
at java.util.prefs.FileSystemPreferences.syncSpi(FileSystemPreferences.java:768)
at java.util.prefs.AbstractPreferences.sync2(AbstractPreferences.java:1332)
at java.util.prefs.AbstractPreferences.sync2(AbstractPreferences.java:1337)
at java.util.prefs.AbstractPreferences.sync(AbstractPreferences.java:1323)
at java.util.prefs.FileSystemPreferences.sync(FileSystemPreferences.java:747)
at java.util.prefs.FileSystemPreferences.flush(FileSystemPreferences.java:824)
at java.util.prefs.FileSystemPreferences.syncWorld(FileSystemPreferences.java:464)
at java.util.prefs.FileSystemPreferences.access$1200(FileSystemPreferences.java:50)
at java.util.prefs.FileSystemPreferences$4$1.run(FileSystemPreferences.java:442)