--- main.c.orig	2007-04-05 14:37:00.754625617 +0200
+++ main.c	2007-04-05 14:37:44.781134544 +0200
@@ -195,7 +195,7 @@
 	
 	GString *cadena;
 	int retorno;
-	
+	visor_ps=g_string_new("");
 	cadena=g_string_new("");
 	retorno=1;
 	g_string_printf(cadena,"/usr/bin/%s",programa);
@@ -280,6 +280,7 @@
 		visor_ps=g_string_new("gv");
 	else {			
 		noviewer_window=glade_xml_get_widget(xml,"noviewer");
+		visor_ps=g_string_new("");
 		gtk_widget_show(noviewer_window);
 	}
 	
@@ -298,6 +299,7 @@
 		visor_ps=g_string_new("gv");
 	else {			
 		noviewer_window=glade_xml_get_widget(xml,"noviewer");
+		visor_ps=g_string_new("");
 		gtk_widget_show(noviewer_window);
 	}