Failed to set setXIncludeAware (true) for parser issue

before I have no problems running , there are times forcibly eclipse did not respond after the emergence of this mistake.

online search problems but said xerces.jar joined this package also failed to solve the problem.
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Do not forget to delete WORKSPACE, project BIN, re-import source, try
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I deleted all workspaces Eclipse hadoop plugin to re-engage nor deleted
Is not leak did not delete anything ?

reload after configuring Eclipse plug-ins , you can not specify hadoop cluster unable New Project
error
Problems occurred while trying to save the state of the workbench.
Problems occurred during save.
org.apache.xerces.dom.DocumentImpl.getXmlStandalone () Z

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project was originally introduced more than a pack another question ! Thank you !