Strange message from 4.1.3 client

Classic Servoy
1

When starting smart client , I see the following strange message. Does anyone know what this means?
This error doesn’t occur when running from Eclipse.

org.xml.sax.SAXParseException: Content is not allowed in prolog.
     at com.sun.org.apache.xerces.internal.parsers.DOMParser.parse(Unknown Source)
     at com.sun.org.apache.xerces.internal.jaxp.DocumentBuilderImpl.parse(Unknown Source)
     at com.servoy.extensions.plugins.xmlreader.XmlReaderProvider.js_readXmlDocumentFromString(XmlReaderProvider.java:79)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
     at java.lang.reflect.Method.invoke(Unknown Source)
     at org.mozilla.javascript.MemberBox.invoke(MemberBox.java:179)
     at org.mozilla.javascript.NativeJavaMethod.call(NativeJavaMethod.java:347)
     at org.mozilla.javascript.Interpreter.interpretLoop(Interpreter.java:3666)
     at org.mozilla.javascript.Interpreter.interpret(Interpreter.java:2680)
     at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:166)
     at org.mozilla.javascript.ContextFactory.doTopCall(ContextFactory.java:387)
     at org.mozilla.javascript.ScriptRuntime.doTopCall(ScriptRuntime.java:3125)
     at org.mozilla.javascript.InterpretedFunction.call(InterpretedFunction.java:165)
     at com.servoy.j2db.scripting.ScriptEngine.executeFunction(ScriptEngine.java:37)
     at com.servoy.j2db.scripting.ScriptEngine.executeFunction(ScriptEngine.java:64)
     at com.servoy.j2db.FormController.Za(FormController.java:68)
     at com.servoy.j2db.FormController.executeFunction(FormController.java:309)
     at com.servoy.j2db.server.headlessclient.SessionClient.executeMethod(SessionClient.java:337)
     at org.apache.jsp.new_002dfds_002dwebshop_002dNL_jsp._jspService(new_002dfds_002dwebshop_002dNL_jsp.java:108)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:393)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:320)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:266)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:802)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:290)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:206)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:230)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:175)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:128)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:104)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:563)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:109)
     at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:261)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:844)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.process(Http11Protocol.java:581)
     at org.apache.tomcat.util.net.JIoEndpoint$Worker.run(JIoEndpoint.java:447)
     at java.lang.Thread.run(Unknown Source)
2

I removed all temporary files in Java including the resources and also the .servoy directory and then the smart client starts as expected without this message

3

that error had nothing to do with a smart client
That was an error on the server about a headless client that executed a method, that again wanted to parse a xml that was invalid. (couldnt be parsed)