diff --git a/ChangeLog b/ChangeLog
index 98ca8b39..19bacbc1 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -18,7 +18,10 @@ The format is based on [Keep a Changelog](http://keepachangelog.com/en/1.0.0/)
 - Imports for Internationalization with gettext
 - Fix bug set wx.Locale for Python 3.8
 - Fix bug subprocess for Windows ([WinError 6] Handler no valid)
-  Set stderr to PIPE
+  - Set stderr to PIPE
+- Do not interpret output [debug] as an error in the Logs
+- Get all Logs except "ffmpeg version"
+- Do not send messages to the GUI if the app does not exist (Destroy)
 
 ### Changed
 - Migration to Python 3.*
diff --git a/youtube_dl_gui/downloaders.py b/youtube_dl_gui/downloaders.py
index cac9b96b..710cb6ed 100644
--- a/youtube_dl_gui/downloaders.py
+++ b/youtube_dl_gui/downloaders.py
@@ -46,7 +46,6 @@ def __init__(self, queue):
         self._filedescriptor = None
         self._running = True
         self._queue = queue
-
         self.start()
 
     def run(self):
@@ -59,15 +58,11 @@ def run(self):
                 pipedata = bytes(pipedata).decode(encoding=get_encoding(), errors='ignore')
                 for line in pipedata.splitlines():
                     # Ignore ffmpeg stderr
-                    if str('ffmpeg version') in line:
+                    if 'ffmpeg version' in line:
                         ignore_line = True
-
                     if not ignore_line and line != "":
                         self._queue.put_nowait(line)
-
-                self._filedescriptor = None
                 ignore_line = False
-
             sleep(self.WAIT_TIME)
 
     def attach_filedescriptor(self, filedesc):
@@ -181,8 +176,6 @@ def download(self, url, options):
 
             if self._is_warning(stderr):
                 self._set_returncode(self.WARNING)
-            else:
-                self._set_returncode(self.ERROR)
 
         # Set return code to ERROR if we could not start the download process
         # or the childs return code is greater than zero
@@ -232,7 +225,8 @@ def _set_returncode(self, code):
 
     @staticmethod
     def _is_warning(stderr):
-        return str(stderr).split(':')[0] == 'WARNING'
+        warning_error = str(stderr).split(':')[0] 
+        return warning_error == 'WARNING' or warning_error == 'ERROR'
 
     def _last_data_hook(self):
         """Set the last data information based on the return code. """
@@ -295,7 +289,6 @@ def _proc_is_alive(self):
         """Returns True if self._proc is alive else False. """
         if self._proc is None:
             return False
-
         return self._proc.poll() is None
 
     def _get_cmd(self, url, options):
@@ -322,24 +315,23 @@ def _create_process(self, cmd):
         """
         info = None
 
+        kwargs = dict(stdin=subprocess.PIPE,
+                     stdout=subprocess.PIPE,
+                     stderr=subprocess.PIPE)
+
         if os.name == 'nt':
             # Hide subprocess window
             info = subprocess.STARTUPINFO()
             info.dwFlags |= subprocess.STARTF_USESHOWWINDOW
             info.wShowWindow = subprocess.SW_HIDE
 
-        # Encode command for subprocess
-        # Refer to http://stackoverflow.com/a/9951851/35070
-        # if sys.version_info < (3, 0):
-        #    cmd = convert_item(cmd, to_unicode=False)
+            kwargs['startupinfo'] = info
+            kwargs['creationflags'] = subprocess.CREATE_NEW_PROCESS_GROUP
+        else:
+            kwargs['start_new_session'] = True
 
         try:
-            self._proc = subprocess.Popen(cmd,
-                                          stdin=subprocess.PIPE,
-                                          stdout=subprocess.PIPE,
-                                          stderr=subprocess.PIPE,
-                                          startupinfo=info,
-                                          start_new_session=True)
+            self._proc = subprocess.Popen(cmd, **kwargs)
         except (ValueError, OSError, FileNotFoundError) as error:
             self._log('Failed to start process: {}'.format(str(cmd)))
             self._log(str(error))
diff --git a/youtube_dl_gui/downloadmanager.py b/youtube_dl_gui/downloadmanager.py
index d040916e..09c578cd 100644
--- a/youtube_dl_gui/downloadmanager.py
+++ b/youtube_dl_gui/downloadmanager.py
@@ -27,6 +27,7 @@
     RLock
 )
 
+import wx
 from wx import CallAfter
 # noinspection PyPep8Naming
 from pubsub import pub as Publisher
@@ -501,7 +502,10 @@ def _talk_to_gui(signal, data=None):
                     downloads using the active() method.
 
         """
-        CallAfter(Publisher.sendMessage, MANAGER_PUB_TOPIC, signal=signal, data=data)
+        app = wx.GetApp()
+
+        if app is not None:
+            CallAfter(Publisher.sendMessage, MANAGER_PUB_TOPIC, signal=signal, data=data)
 
     def _check_youtubedl(self):
         """Check if youtube-dl binary exists. If not try to download it. """
@@ -559,17 +563,19 @@ class Worker(Thread):
         """
 
     WAIT_TIME = 0.1
+    worker_count = 0
 
     def __init__(self, opt_manager, youtubedl, log_manager=None, worker=None):
         super(Worker, self).__init__()
         # Use Daemon ?
         # self.setDaemon(True)
+        Worker.worker_count += 1
         self.opt_manager = opt_manager
         self.log_manager = log_manager
         if worker:
             self.worker = worker
         else:
-            self.worker = 1
+            self.worker = Worker.worker_count
 
         self.setName("Worker_" + str(worker))
 
@@ -638,8 +644,8 @@ def stop_download(self):
 
     def close(self):
         """Kill the worker after stopping the download process. """
+        self.stop_download()
         self._running = False
-        self._downloader.stop()
 
     def available(self):
         """Return True if the worker has no job else False. """
@@ -752,5 +758,8 @@ def _talk_to_gui(self, signal, data):
 
         if signal == 'receive':
             self._wait_for_reply = True
+        
+        app = wx.GetApp()
 
-        CallAfter(Publisher.sendMessage, WORKER_PUB_TOPIC, signal=signal, data=data)
+        if app is not None:
+            CallAfter(Publisher.sendMessage, WORKER_PUB_TOPIC, signal=signal, data=data)
diff --git a/youtube_dl_gui/version.py b/youtube_dl_gui/version.py
index 45da0750..5220f471 100644
--- a/youtube_dl_gui/version.py
+++ b/youtube_dl_gui/version.py
@@ -1,4 +1,4 @@
 # -*- coding: utf-8 -*-
 
 
-__version__ = '1.1.2'
+__version__ = '1.1.3'