diff --git a/toxygen/app.py b/toxygen/app.py
index a370a91..497a460 100644
--- a/toxygen/app.py
+++ b/toxygen/app.py
@@ -107,6 +107,7 @@ class App:
         self._tray.hide()
         self._save_profile()
         self._settings.close()
+        self._calls_manager.set_toxav(None)
         del self._tox
 
     # -----------------------------------------------------------------------------------------------------------------
@@ -202,7 +203,7 @@ class App:
 
     def _start_threads(self, initial_start=True):
         # init thread
-        self._init = threads.InitThread(self._tox, self._plugin_loader, self._settings)
+        self._init = threads.InitThread(self._tox, self._plugin_loader, self._settings, initial_start)
         self._init.start()
 
         # starting threads for tox iterate and toxav iterate
diff --git a/toxygen/av/calls.py b/toxygen/av/calls.py
index 2673f1a..d5f2fe7 100644
--- a/toxygen/av/calls.py
+++ b/toxygen/av/calls.py
@@ -7,12 +7,13 @@ import itertools
 import numpy as np
 from av import screen_sharing
 from av.call import Call
+import common.tox_save
 
 
-class AV:
+class AV(common.tox_save.ToxAvSave):
 
     def __init__(self, toxav, settings):
-        self._toxav = toxav
+        super().__init__(toxav)
         self._settings = settings
         self._running = True
 
@@ -36,9 +37,6 @@ class AV:
         self._video_width = 640
         self._video_height = 480
 
-    def set_toxav(self, toxav):
-        self._toxav = toxav
-
     def stop(self):
         self._running = False
         self.stop_audio_thread()
diff --git a/toxygen/av/calls_manager.py b/toxygen/av/calls_manager.py
index eefd03a..5a48672 100644
--- a/toxygen/av/calls_manager.py
+++ b/toxygen/av/calls_manager.py
@@ -8,8 +8,8 @@ import common.event as event
 
 class CallsManager:
 
-    def __init__(self, toxAV, settings, screen, contacts_manager):
-        self._call = av.calls.AV(toxAV, settings)  # object with data about calls
+    def __init__(self, toxav, settings, screen, contacts_manager):
+        self._call = av.calls.AV(toxav, settings)  # object with data about calls
         self._call_widgets = {}  # dict of incoming call widgets
         self._incoming_calls = set()
         self._settings = settings
diff --git a/toxygen/common/tox_save.py b/toxygen/common/tox_save.py
index 5d4cee0..09c159b 100644
--- a/toxygen/common/tox_save.py
+++ b/toxygen/common/tox_save.py
@@ -7,3 +7,12 @@ class ToxSave:
 
     def set_tox(self, tox):
         self._tox = tox
+
+
+class ToxAvSave:
+
+    def __init__(self, toxav):
+        self._toxav = toxav
+
+    def set_toxav(self, toxav):
+        self._toxav = toxav
diff --git a/toxygen/middleware/threads.py b/toxygen/middleware/threads.py
index 192f723..15e9665 100644
--- a/toxygen/middleware/threads.py
+++ b/toxygen/middleware/threads.py
@@ -38,15 +38,18 @@ class BaseQThread(QtCore.QThread):
 
 class InitThread(BaseThread):
 
-    def __init__(self, tox, plugin_loader, settings):
+    def __init__(self, tox, plugin_loader, settings, is_first_start):
         super().__init__()
         self._tox, self._plugin_loader, self._settings = tox, plugin_loader, settings
+        self._is_first_start = is_first_start
 
     def run(self):
-        # download list of nodes if needed
-        download_nodes_list(self._settings)
-        # start plugins
-        self._plugin_loader.load()
+        if self._is_first_start:
+            # download list of nodes if needed
+            download_nodes_list(self._settings)
+            # start plugins
+            self._plugin_loader.load()
+
         # bootstrap
         try:
             for data in generate_nodes():
@@ -56,10 +59,12 @@ class InitThread(BaseThread):
                 self._tox.add_tcp_relay(*data)
         except:
             pass
+
         for _ in range(10):
             if self._stop_thread:
                 return
             time.sleep(1)
+
         while not self._tox.self_get_connection_status():
             try:
                 for data in generate_nodes(None):