diff --git a/src/fr/devinsy/xid/Presenter.java b/src/fr/devinsy/xid/Presenter.java
index f71d009..e9050fb 100644
--- a/src/fr/devinsy/xid/Presenter.java
+++ b/src/fr/devinsy/xid/Presenter.java
@@ -721,38 +721,37 @@ public class Presenter
 
 			// Parse the input file.
 			result = db.parse (source);
-System.out.println("ZO4");
+
 			if (errorHandler.hasError ())
 			{
-				System.out.println("ZO4a");
+System.out.println("ZO4a");
 				throw new Exception (errorHandler.toString ());
 			}
 			else
-			{System.out.println("ZO4b");
+			{
 				DomPresenter.addMetaTag (result, "generator", "XID 0.0");
 			}
-System.out.println("ZO5");
 		}
 		catch (ParserConfigurationException exception)
 		{
 			String errorMessage = "Parser configuration exception: " + exception.getMessage ();
 			logger.error (errorMessage);
 			result = null;
-			throw new Exception (errorMessage);
+			throw new Exception (errorMessage, exception);
 		}
 		catch (SAXException exception)
 		{
 			String errorMessage = "Error during SAX parsing: " + exception.getMessage ();
 			logger.error (errorMessage);
 			result = null;
-			throw new Exception (errorMessage);
+			throw new Exception (errorMessage, exception);
 		}
 		catch (IOException exception)
 		{
 			String errorMessage = "IOError during parsing." + exception.getMessage ();
 			logger.error (errorMessage);
 			result = null;
-			throw new Exception (errorMessage);
+			throw new Exception (errorMessage, exception);
 		}
 
 		//