diff -r c0ea47957bdc -r 636cd1b8361d QTfrontend/util/MessageDialog.h
--- a/QTfrontend/util/MessageDialog.h	Wed Mar 27 14:20:34 2013 +0100
+++ b/QTfrontend/util/MessageDialog.h	Thu Mar 28 18:34:30 2013 +0200
@@ -29,7 +29,7 @@
         static int ShowFatalMessage(const QString & msg, QWidget * parent = 0);
         static int ShowErrorMessage(const QString & msg, QWidget * parent = 0);
         static int ShowInfoMessage(const QString & msg, QWidget * parent = 0);
-        static int ShowMessage(const QString & title = 0, const QString & msg, QMessageBox::Icon icon = QMessageBox::NoIcon, QWidget * parent = 0);
+        static int ShowMessage(const QString & title, const QString & msg, QMessageBox::Icon icon = QMessageBox::NoIcon, QWidget * parent = 0);
 };
 
 #endif