diff --git a/.idea/misc.xml b/.idea/misc.xml
index 7694c31..a6ffc70 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -3,6 +3,9 @@
   <component name="JavaScriptSettings">
     <option name="languageLevel" value="ES6" />
   </component>
+  <component name="ProjectPlainTextFileTypeManager">
+    <file url="file://$PROJECT_DIR$/revpicommander/locale/revpicommander_de.ts" />
+  </component>
   <component name="ProjectRootManager" version="2" project-jdk-name="Python 3.8" project-jdk-type="Python SDK" />
   <component name="PythonCompatibilityInspectionAdvertiser">
     <option name="version" value="3" />
diff --git a/revpicommander/aclmanager.py b/revpicommander/aclmanager.py
index 26b5d3f..d42e495 100644
--- a/revpicommander/aclmanager.py
+++ b/revpicommander/aclmanager.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-u"""Manager for ACL lists."""
+"""Manager for ACL lists."""
 __author__ = "Sven Sager"
 __copyright__ = "Copyright (C) 2018 Sven Sager"
 __license__ = "GPLv3"
@@ -20,7 +20,7 @@ class AclManager(QtWidgets.QDialog, Ui_diag_aclmanager):
         self.setupUi(self)
         self.setFixedSize(self.size())
 
-        self.__re_ipacl = compile(r"([\d*]{1,3}\.){3}[\d*]{1,3},-1")
+        self.__re_ipacl = compile(r"(25[0-5]|(2[0-4]|[01]?\d|)\d)(\.(25[0-5]|(2[0-4]|[01]?\d|)\d)){3},-1")
         self.__dict_acltext = {}
         self.__cbb_level_loaded_index = 0
         self.__mrk_message_shown = 0
diff --git a/revpicommander/helper.py b/revpicommander/helper.py
index de34a75..afc4f29 100644
--- a/revpicommander/helper.py
+++ b/revpicommander/helper.py
@@ -353,6 +353,7 @@ class ConnectionManager(QtCore.QThread):
                 # Get new connection information to create object in this thread
                 item = self._cli_connect.get()
                 sp = ServerProxy("http://{0}:{1}".format(*item))
+                self._cli_connect.task_done()
 
             if sp:
                 try:
diff --git a/revpicommander/revpifiles.py b/revpicommander/revpifiles.py
index abd2c7a..f3f234c 100644
--- a/revpicommander/revpifiles.py
+++ b/revpicommander/revpifiles.py
@@ -7,7 +7,6 @@ __license__ = "GPLv3"
 import gzip
 import os
 from enum import IntEnum
-from os import DirEntry, scandir
 from xmlrpc.client import Binary
 
 from PyQt5 import QtCore, QtGui, QtWidgets
@@ -79,6 +78,7 @@ class RevPiFiles(QtWidgets.QMainWindow, Ui_win_files):
         uploaded = True  # Will be False, when opt_program was found in files
         ec = 0
 
+        # todo: Do this in a thread with status bar to prevent freezing program on long upload times
         for file_name in self.file_list_local():
             # todo: Check exception of local file
             with open(file_name, "rb") as fh:
@@ -152,6 +152,9 @@ class RevPiFiles(QtWidgets.QMainWindow, Ui_win_files):
         if "plcdownload_file" not in helper.cm.xml_funcs:
             self.btn_to_left.setEnabled(False)
             self.btn_to_left.setToolTip(self.tr("The RevPiPyLoad version on the Revolution Pi is to old."))
+        elif not helper.cm.develop_watch_path:
+            self.btn_to_left.setEnabled(False)
+            self.btn_to_left.setToolTip(self.tr("Choose a local directory first."))
         else:
             self.btn_to_left.setEnabled(state_revpi)
 
@@ -230,7 +233,7 @@ class RevPiFiles(QtWidgets.QMainWindow, Ui_win_files):
             )
             return
 
-        for de in os.scandir(base_dir):  # type: DirEntry
+        for de in os.scandir(base_dir):  # type: os.DirEntry
 
             if self.tree_files_counter > self.tree_files_counter_max:
                 return
@@ -459,7 +462,7 @@ class RevPiFiles(QtWidgets.QMainWindow, Ui_win_files):
         """Upload selected files to revolution pi."""
         pi.logger.debug("RevPiFiles.on_btn_to_right_pressed")
         self._do_my_job(False)
-        self.file_list_revpi()
+        self._load_files_revpi(True)
 
     @QtCore.pyqtSlot()
     def on_btn_to_left_pressed(self):
diff --git a/revpicommander/revpilogfile.py b/revpicommander/revpilogfile.py
index a46d545..5e22b6d 100644
--- a/revpicommander/revpilogfile.py
+++ b/revpicommander/revpilogfile.py
@@ -117,10 +117,6 @@ class RevPiLogfile(QtWidgets.QMainWindow, Ui_win_revpilogfile):
 
         self._load_gui_settings()
 
-    def __del__(self):
-        pi.logger.debug("RevPiLogfile.__del__")
-        self.th_data.deleteLater()
-
     def _create_data_thread(self):
         self.th_data.deleteLater()