Org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException:Line 1 in XML document from class path resource

Org.springframework.beans.factory.xml.XmlBeanDefinitionStoreException:Line 1 in XML document from class path resource [ Mo/com/sinokru/gxt/config] is invalid; Nested exception is org.xml.sax.SAXParseException:Content isn't allowed in Prolog. At Org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions ( xmlbeandefinitionreader.java:404) at Org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions (Xmlbeandefinitionreader.java : 342) at Org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions ( xmlbeandefinitionreader.java:310) at Org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions ( abstractbeandefinitionreader.java:143) at Org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions ( abstractbeandefinitionreader.java:178) at Org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions ( abstractbeandefinitionreader.java:149) at Org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions ( xmlwebapplicationcontext.java:124) at Org.springframework.web.context.support.XmlWebApplicationContext.loadBeanDefinitions ( xmlwebapplicationcontext.java:92) at Org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory ( abstractrefreshableapplicationcontext.java:123) at Org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory ( abstractapplicationcontext.java:423) at Org.springframework.context.support.AbstractApplicationContext.refresh ( abstractapplicationcontext.java:353) at Org.springframework.web.context.ContextLoader.createWebApplicationContext (contextloader.java:255) at Org.springframework.web.context.ContextLoader.initWebApplicationContext (contextloader.java:199) at Org.springframework.web.context.ContextLoaderListener.contextInitialized (contextloaderlistener.java:45) at Org.mortbay.jetty.handler.ContextHandler.startContext (contexthandler.java:530) at Org.mortbay.jetty.servlet.Context.startContext (context.java:135) at Org.mortbay.jetty.webapp.WebAppContext.startContext (webappcontext.java:1218) at Org.mortbay.jetty.handler.ContextHandler.doStart (contexthandler.java:500) at Org.mortbay.jetty.webapp.WebAppContext.doStart (webappcontext.java:448) at Org.mortbay.component.AbstractLifeCycle.start (abstractlifecycle.java:40) at Org.mortbay.jetty.handler.HandlerWrapper.doStart (handlerwrapper.java:117) at Org.mortbay.component.AbstractLifeCycle.start (abstractlifecycle.java:40) at Org.mortbay.jetty.handler.HandlerWrapper.doStart (handlerwrapper.java:117) at Org.mortbay.jetty.Server.doStart ( server.java:217) at Org.mortbay.component.AbstractLifeCycle.start (abstractlifecycle.java:40) at Com.google.appengine.tools.development.JettyContainerService.startContainer (jettycontainerservice.java:152) at Com.google.appengine.tools.development.AbstractContainerService.startup (abstractcontainerservice.java:116) at Com.google.appengine.toolS.development.devappserverimpl.start (devappserverimpl.java:218) at Com.google.appengine.tools.development.gwt.AppEngineLauncher.start (appenginelauncher.java:86) at Com.google.gwt.dev.HostedMode.doStartUpServer (hostedmode.java:365) at Com.google.gwt.dev.HostedModeBase.startUp ( hostedmodebase.java:589) at Com.google.gwt.dev.HostedModeBase.run (hostedmodebase.java:397) at Com.google.gwt.dev.HostedMode.main (hostedmode.java:232)