diff --git a/CHANGELOG.md b/CHANGELOG.md
index 4505e0d..a6b9068 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,6 +1,11 @@
 # Changelog
 
 ## 0.8.x
+### 0.8.4: Minor Enhancements & Cleanup
+- Updated window titles.
+- Improved error handling for updater: now displays the specific error message instead of just **"error"** when an issue occurs during update checks.
+- Ensured all child windows close when the main window is closed.
+
 ### 0.8.3: Fix – OptimaLab35 Not Closing After Update
 - Fixed an issue where **OptimaLab35** would not close properly when updating, resulting in an unresponsive instance and multiple running processes.
 
diff --git a/src/OptimaLab35/gui.py b/src/OptimaLab35/gui.py
index 24c2871..1f8e5ed 100644
--- a/src/OptimaLab35/gui.py
+++ b/src/OptimaLab35/gui.py
@@ -53,7 +53,7 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
 
         # Change UI elements
         self.change_statusbar(f"Using {self.o.name} v{self.o.version}", 5000)
-        self.setWindowTitle(f"{self.name} v{self.version}")
+        self.set_title()
         self.default_ui_layout()
         self.define_gui_interaction()
 
@@ -63,6 +63,13 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         self.ui.png_quality_Slider.setVisible(False)
         self.ui.quality_label_2.setVisible(False)
 
+    def set_title(self):
+        if self.version == "0.0.1":
+            title = f"{self.name} DEV MODE"
+        else:
+            title = self.name
+        self.setWindowTitle(title)
+
     def define_gui_interaction(self):
         self.ui.input_folder_button.clicked.connect(self.browse_input_folder)
         self.ui.output_folder_button.clicked.connect(self.browse_output_folder)
@@ -108,7 +115,7 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         info_text = f"""
         <h3>{self.name} v{self.version}</h3>
         <p>(C) 2024-2025 Mr Finchum aka CodeByMrFinchum</p>
-        <p>{self.name} is a GUI for {self.o.name} (v{self.o.version}), enhancing its functionality with a\nuser-friendly interface for efficient image and metadata management.</p>
+        <p>{self.name} is a GUI for {self.o.name} (v{self.o.version}), enhancing its functionality with a user-friendly interface for efficient image and metadata management.</p>
 
         <h4>Features:</h4>
         <ul>
@@ -462,6 +469,10 @@ class OptimaLab35(QMainWindow, Ui_MainWindow):
         elif do == "write":
             self.u.write_yaml(self.exif_file, self.available_exif_data)
 
+    def closeEvent(self, event):
+        QApplication.closeAllWindows()
+        event.accept()
+
 class UpdaterWindow(QMainWindow, Ui_Updater_Window):
     # Mixture of code by me, code/functions refactored by ChatGPT and code directly from ChatGPT
     def __init__(self, optimalab35_localversion, optima35_localversion):
@@ -490,7 +501,7 @@ class UpdaterWindow(QMainWindow, Ui_Updater_Window):
 
     def define_gui_interaction(self):
         """Setup UI interactions."""
-        if self.optimalab35_localversion == "0.0.2":
+        if self.optimalab35_localversion == "0.0.1":
             self.dev_mode()
             return
         else:
@@ -524,7 +535,7 @@ class UpdaterWindow(QMainWindow, Ui_Updater_Window):
         # Check OptimaLab35 update
         is_newer_ol35, latest_version_ol35 = self.ppu_ol35.check_for_update(True)
         if is_newer_ol35 is None:
-            self.ui.label_optimalab35_latestversion.setText("Error")
+            self.ui.label_optimalab35_latestversion.setText(latest_version_ol35[0:13])
         else:
             self.ui.label_optimalab35_latestversion.setText(latest_version_ol35)
             self.updates_available["OptimaLab35"] = is_newer_ol35
@@ -532,7 +543,7 @@ class UpdaterWindow(QMainWindow, Ui_Updater_Window):
         # Check optima35 update
         is_newer_o35, latest_version_o35 = self.ppu_o35.check_for_update(True)
         if is_newer_o35 is None:
-            self.ui.label_optima35_latestversion.setText("Error")
+            self.ui.label_optima35_latestversion.setText(latest_version_o35[0:13])
         else:
             self.ui.label_optima35_latestversion.setText(latest_version_o35)
             self.updates_available["optima35"] = is_newer_o35
@@ -598,8 +609,6 @@ class UpdaterWindow(QMainWindow, Ui_Updater_Window):
         python = sys.executable
         os.execl(python, python, *sys.argv)
 
-
-
 class PreviewWindow(QMainWindow, Ui_Preview_Window):
     values_selected = Signal(int, int, bool)
 
diff --git a/src/OptimaLab35/ui/updater_window.py b/src/OptimaLab35/ui/updater_window.py
index 8ea230e..cd61ba0 100644
--- a/src/OptimaLab35/ui/updater_window.py
+++ b/src/OptimaLab35/ui/updater_window.py
@@ -23,7 +23,7 @@ class Ui_Updater_Window(object):
         if not Updater_Window.objectName():
             Updater_Window.setObjectName(u"Updater_Window")
         Updater_Window.setEnabled(True)
-        Updater_Window.resize(372, 224)
+        Updater_Window.resize(372, 251)
         self.centralwidget = QWidget(Updater_Window)
         self.centralwidget.setObjectName(u"centralwidget")
         self.gridLayout_2 = QGridLayout(self.centralwidget)
@@ -128,8 +128,8 @@ class Ui_Updater_Window(object):
     # setupUi
 
     def retranslateUi(self, Updater_Window):
-        Updater_Window.setWindowTitle(QCoreApplication.translate("Updater_Window", u"OptimaLab35 - Updater", None))
-        self.label_last_check.setText(QCoreApplication.translate("Updater_Window", u"Last update check ago:", None))
+        Updater_Window.setWindowTitle(QCoreApplication.translate("Updater_Window", u"Updater", None))
+        self.label_last_check.setText(QCoreApplication.translate("Updater_Window", u"Last update check:", None))
         self.label_last_check_2.setText(QCoreApplication.translate("Updater_Window", u"TextLabel", None))
         self.label_6.setText(QCoreApplication.translate("Updater_Window", u"Local Version", None))
         self.label_optimalab35_latestversion.setText(QCoreApplication.translate("Updater_Window", u"unknown", None))
diff --git a/src/OptimaLab35/ui/updater_window.ui b/src/OptimaLab35/ui/updater_window.ui
index 4d8210d..b1fb75e 100644
--- a/src/OptimaLab35/ui/updater_window.ui
+++ b/src/OptimaLab35/ui/updater_window.ui
@@ -10,18 +10,18 @@
     <x>0</x>
     <y>0</y>
     <width>372</width>
-    <height>224</height>
+    <height>251</height>
    </rect>
   </property>
   <property name="windowTitle">
-   <string>OptimaLab35 - Updater</string>
+   <string>Updater</string>
   </property>
   <widget class="QWidget" name="centralwidget">
    <layout class="QGridLayout" name="gridLayout_2">
     <item row="0" column="0">
      <widget class="QLabel" name="label_last_check">
       <property name="text">
-       <string>Last update check ago:</string>
+       <string>Last update check:</string>
       </property>
      </widget>
     </item>