Getting error "Cannot parse XML input" when creating KM/Coll content

Hello people,

I'd like to ask you for help.

We're running Netweaver 7.31, when I try to create/edit some "News" content, I'm getting new errorwindow named "XMLFormsServletResponse" with follow error:

XML - Forms

Cannot parse XML input

org.xml.sax.SAXException

at com.sapportals.wcm.service.pipeline.tools.JaxpParser.parse(JaxpParser.java:98)

at com.sapportals.wcm.service.pipeline.tools.JaxpParser.parse(JaxpParser.java:83)

at com.sapportals.wcm.service.xmlforms.transformation.HtmlGenerator.getHtmlStream(HtmlGenerator.java:88)

at com.sapportals.wcm.service.xmlforms.transformation.Transformation.render(Transformation.java:482)

at com.sapportals.wcm.service.xmlforms.transformation.Transformation.renderTemplate(Transformation.java:353)

at com.sapportals.wcm.app.xmlforms.EditServlet.doGetAction(EditServlet.java:416)

at com.sapportals.wcm.app.xmlforms.XFBaseServlet.doGet(XFBaseServlet.java:241)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:734)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

at com.sapportals.wcm.app.xmlforms.XFBaseServlet.service(XFBaseServlet.java:134)

at com.sapportals.wcm.portal.proxy.PCProxyServlet.service(PCProxyServlet.java:344)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

at com.sap.portal.prt.broker.ServletComponentItem$ServletWrapperComponent.doContent(ServletComponentItem.java:99)

at com.sapportals.portal.prt.component.AbstractPortalComponent.serviceDeprecated(AbstractPortalComponent.java:213)

at com.sapportals.portal.prt.component.AbstractPortalComponent.service(AbstractPortalComponent.java:129)

at com.sap.portal.prt.core.RequestDispatcherFactory$PortalComponentRequestDispatcher$5.service(RequestDispatcherFactory.java:308)

at com.sap.engine.services.servlets_jsp.server.deploy.impl.module.IRequestDispatcherImpl.dispatch(IRequestDispatcherImpl.java:270)

at com.sap.portal.prt.core.RequestDispatcherFactory$PortalComponentRequestDispatcher.service(RequestDispatcherFactory.java:298)

at com.sap.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:229)

at com.sap.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:107)

at com.sap.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:141)

at com.sap.portal.prt.component.PortalComponentResponse.include(PortalComponentResponse.java:206)

at com.sap.portal.prt.pom.PortalNode.service(PortalNode.java:588)

at com.sap.portal.prt.core.PortalRequestManager.callPortalComponent(PortalRequestManager.java:233)

at com.sap.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:107)

at com.sap.portal.prt.core.PortalRequestManager.dispatchRequest(PortalRequestManager.java:141)

at com.sap.portal.prt.core.PortalRequestManager.runRequestCycle(PortalRequestManager.java:520)

at com.sapportals.portal.prt.connection.ServletConnection.handleRequest(ServletConnection.java:202)

at com.sap.portal.prt.dispatcher.DispatcherServlet.service(DispatcherServlet.java:132)

at javax.servlet.http.HttpServlet.service(HttpServlet.java:847)

at com.sap.engine.services.servlets_jsp.server.runtime.FilterChainImpl.runServlet(FilterChainImpl.java:202)

at com.sap.engine.services.servlets_jsp.server.runtime.FilterChainImpl.doFilter(FilterChainImpl.java:103)

at com.sap.portal.http.EnrichNavRequestFilter.doFilter(EnrichNavRequestFilter.java:49)

at com.sap.engine.services.servlets_jsp.server.runtime.FilterChainImpl.doFilter(FilterChainImpl.java:79)

at com.sap.portal.prt.dispatcher.CustomHeaderFilter.doFilter(CustomHeaderFilter.java:58)

at com.sap.engine.services.servlets_jsp.server.runtime.FilterChainImpl.doFilter(FilterChainImpl.java:79)

at com.sap.portal.http.EnrichNavRequestFilter.doFilter(EnrichNavRequestFilter.java:49)

at com.sap.engine.services.servlets_jsp.server.runtime.FilterChainImpl.doFilter(FilterChainImpl.java:79)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.runServlet(HttpHandlerImpl.java:432)

at com.sap.engine.services.servlets_jsp.server.HttpHandlerImpl.handleRequest(HttpHandlerImpl.java:210)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:441)

at com.sap.engine.services.httpserver.server.RequestAnalizer.startServlet(RequestAnalizer.java:430)

at com.sap.engine.services.servlets_jsp.filters.DSRWebContainerFilter.process(DSRWebContainerFilter.java:38)