Hi, I am currently learning how to use BaseX with Java in embedded mode. When I use the following code with SerialMethod.BASEX every thing is fine however if I replace it with  SerialMethod.XML I obtain an empty file without any error message. Could you please tell me what I am doing wrong in the second case (with SerialMethod.XML) ? ======================     public static void serialize(String query, String outputFileUri) {         try {             QueryProcessor processor = new QueryProcessor(query, context);             File outputFile = FileProc.newFile(outputFileUri);             SerializerOptions so = new SerializerOptions();             so.set(SerializerOptions.ENCODING, "UTF-8");             so.set(SerializerOptions.METHOD, SerialMethod.BASEX); //            so.set(SerializerOptions.METHOD, SerialMethod.XML);             so.set(SerializerOptions.OMIT_XML_DECLARATION, YesNo.NO);             Serializer serializer = Serializer.get(new FileOutputStream(outputFile), so);             Item item = processor.iter().next();             serializer.serialize(item);             processor.close();         } catch (QueryException e) {             e.printStackTrace();         } catch (IOException e) {             e.printStackTrace();         }     } ====================== BaseX 9.3.3 from github Java 8 Windows 10 Regards -- Jean-François MAUREL PIMECA http://www.pimeca.com