diff --git a/ba/ba0100.cpp b/ba/ba0100.cpp
index 808aab302..449e27eba 100755
--- a/ba/ba0100.cpp
+++ b/ba/ba0100.cpp
@@ -375,18 +375,11 @@ bool TExplorer_mask::stop_run(KEY k)
       for (i = 2; i >= 0; i--)
         xvt_image_destroy(image[i]);
 
-      if (sys_dll_changed())  //se e' stato installato SY..
-			{
-        xvt_sys_sleep(1); //..aspetta un attimo poi forza l'uscita
-			}
-      else
+      if (!yesno_box(TR("Si desidera uscire?")))  //..altrimenti chiede educatamente se si desidera uscire
       {
-        if (!yesno_box(TR("Si desidera uscire?")))  //..altrimenti chiede educatamente se si desidera uscire
-        {
-          for (i = 0; i < 3; i++)
-            xvt_dwin_invalidate_rect(window[i], NULL);
-          return false;
-        }
+        for (i = 0; i < 3; i++)
+          xvt_dwin_invalidate_rect(window[i], NULL);
+        return false;
       }
     }
   }
@@ -493,6 +486,9 @@ bool TExplorer_mask::on_key(KEY k)
     set(DLG_USER, app().main_menu().last_search_string(), true); 
 		return true;
 	}
+  if (k == K_FORCE_CLOSE || k == K_QUIT)
+    return stop_run(k);
+
 	return TMask::on_key(k);
 }
 
diff --git a/ba/ba0101.cpp b/ba/ba0101.cpp
index 1c76d6761..bbe7c1057 100755
--- a/ba/ba0101.cpp
+++ b/ba/ba0101.cpp
@@ -317,42 +317,20 @@ bool TMenuitem::perform_program() const
     TExternal_app a(_action);
 		const bool async = install_app;     // Lancio l'installazione moduli sempre asincrona
     a.run(async, 3);
-/*
-    if (maintenance_app)
-    { 
-      char line1[16],line2[16];
 
-      while  (fexist("conv.his"))
-      {
-        FILE* fp = fopen("conv.his","r");
-        fgets(line1,15,fp);
-        fclose(fp);
-        // Ora aspetta...
-        time_t old_time ;
-        time( &old_time) ;
-        while (  time( (time_t *) 0 ) <= old_time ) do_events();
-        TExternal_app auto_conv("ba1 -0 -C");
-        auto_conv.run();
-        fp = fopen("conv.his","r");
-        if (fp != NULL)
-        {
-          fgets(line2,15,fp);
-          fclose(fp);
-        }
-        else strcpy(line2,"");
-        if (strcmp(line1,line2) == 0)
-          if (!yesno_box("La conversione non sembra procedere. Continuare?"))
-            break; 
-      }
-    }
-*/
     prefix().set("DEF");                     // Aggiorna prefix
 
     if (install_app)
     {
       WINDOW w = cur_win();
-      if (w != NULL_WIN)
-        dispatch_e_char(w, K_QUIT);
+      if (w != NULL_WIN)  //TExplorer_mask
+        dispatch_e_char(w, K_FORCE_CLOSE); //chiude senza chiedere conferma (installazione e roba simile)
+			else
+			{
+   		  EVENT e; memset(&e, 0, sizeof(e));
+        e.type = E_CLOSE;
+				dispatch_event(TASK_WIN, e, true);
+			}
     }
       
     printer_destroy();  // Forza rilettura parametri della stampante
diff --git a/ba/ba1700.cpp b/ba/ba1700.cpp
index 4572f274c..7a1da0a57 100755
--- a/ba/ba1700.cpp
+++ b/ba/ba1700.cpp
@@ -624,8 +624,9 @@ int TInstaller_mask::needs_reboot(const TFilename& file) const
 
 bool TInstaller_mask::is_zip_file(const TFilename& n) const
 {
-  const char* ext = n.ext();
-  return xvt_str_compare_ignoring_case(ext, "zip") == 0;
+	bool yes = xvt_str_compare_ignoring_case(n.ext(), "zip") == 0 && 
+		         xvt_str_compare_ignoring_case(n.name(), "dninst.zip") != 0;
+return yes;
 }
 
 void TInstaller_mask::create_dirs(const char* path) const
diff --git a/xvaga/xvaga.cpp b/xvaga/xvaga.cpp
index 764a243c6..70a407720 100755
--- a/xvaga/xvaga.cpp
+++ b/xvaga/xvaga.cpp
@@ -5017,7 +5017,11 @@ WINDOW xvt_win_create(WIN_TYPE wtype, const RCT* rct_p, const char* title, int m
 
 long xvt_win_dispatch_event(WINDOW win, EVENT* event_p)
 {
-	XVT_ASSERT(event_p != NULL);
+	XVT_ASSERT(win != NULL_WIN && event_p != NULL);
+
+  if (win == (WINDOW)_task_win)
+    return _task_win_handler(win, event_p);
+	
 	CAST_TWIN(win, w);
 	return w._eh(win, event_p);
 }