critical error asked me to paste and email

class org.apache.xmlbeans.XmlException

error: Unexpected end of file after null

org.apache.xmlbeans.impl.store.Locale$SaxLoader.load(Locale.java:3486)

org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1276)

org.apache.xmlbeans.impl.store.Locale.parseToXmlObject(Locale.java:1263)

org.apache.xmlbeans.impl.schema.SchemaTypeLoaderBase.parse(SchemaTypeLoaderB
ase.java:345)

org.w3.x2009.x10.unicorn.observationresponse.ObservationresponseDocument$Fac
tory.parse(Unknown Source)

org.w3c.unicorn.response.impl.DefaultResponseXBeans.<init>(DefaultResponseXB
eans.java:60)

sun.reflect.GeneratedConstructorAccessor179.newInstance(Unknown Source)

sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstruc
torAccessorImpl.java:27)

java.lang.reflect.Constructor.newInstance(Constructor.java:513)

org.w3c.unicorn.response.ResponseFactory.getResponse(ResponseFactory.java:24
)

org.w3c.unicorn.request.URIRequest.doRequest(URIRequest.java:141)

org.w3c.unicorn.RequestThread.run(RequestThread.java:66)