- fixed issue with trying to access GUI from different threads by adding a new signal for printing to shell messages

app_Main.py

@@ -203,9 +203,10 @@ class App(QtCore.QObject):
     # ###############################################################################################################
 
     # Inform the user
-    # Handled by:
-    #  * App.info() --> Print on the status bar
+    # Handled by: App.info() --> Print on the status bar
     inform = QtCore.pyqtSignal([str], [str, bool])
+    # Handled by: App.info_shell() --> Print on the shell
+    inform_shell = QtCore.pyqtSignal(str)
 
     app_quit = QtCore.pyqtSignal()
 
@@ -762,6 +763,9 @@ class App(QtCore.QObject):
         self.inform[str].connect(self.info)
         self.inform[str, bool].connect(self.info)
 
+        # signal for displaying messages in the shell
+        self.inform_shell.connect(self.info_shell)
+
         # signal to be called when the app is quiting
         self.app_quit.connect(self.quit_application, type=Qt.QueuedConnection)
         self.message.connect(lambda: message_dialog(parent=self.ui))
@@ -2428,6 +2432,9 @@ class App(QtCore.QObject):
             if msg != '' and shell_echo is True:
                 self.shell_message(msg)
 
+    def info_shell(self, msg):
+        self.shell_message(msg=msg)
+
     def on_import_preferences(self):
         """
         Loads the application default settings from a saved file into