The update will not work anyway.
Index: xvst-2.5.1/src/options.cpp
===================================================================
--- xvst-2.5.1.orig/src/options.cpp	2014-01-10 20:22:19.441638438 +0100
+++ xvst-2.5.1/src/options.cpp	2014-01-10 20:22:19.437638438 +0100
@@ -355,9 +355,9 @@
 
 	languageFile = LanguageManager::getDefaultUserLanguage(getLanguagesPath()); // "english_uk.language";
 
-	installAutomaticallyUpdates = true;
+	installAutomaticallyUpdates = false;
 	lastUpdate = QDate(2007, 01, 01);
-	checkForUpdatesOnStartup = true;
+	checkForUpdatesOnStartup = false;
 	checkForUpdatesEvery = 1;
 
 	displayBugReport = true;