diff --git a/View/mainwindow.py b/View/mainwindow.py
index d2c4b4a..dcdfc4f 100644
--- a/View/mainwindow.py
+++ b/View/mainwindow.py
@@ -39,7 +39,7 @@ from View.about_window import AboutWindow
 import settings as stg
 
 import numpy as np
-from subprocess import check_call, run
+from subprocess import Popen
 
 import time
 
@@ -275,24 +275,36 @@ class Ui_MainWindow(object):
         cc_kt.exec()
 
     def db_browser_for_sqlite(self):
-        check_call("/usr/bin/sqlitebrowser")
+        Popen(f"sqlitebrowser", shell=True)
 
     def about_window(self):
         print("about")
         aw = AboutWindow()
         aw.exec()
 
+    def current_file_path(self, filename):
+        return os.path.abspath(
+            os.path.join(
+                os.path.dirname(__file__),
+                "..", filename
+            )
+        )
+
+    def open_doc_file(self, filename):
+        QtGui.QDesktopServices.openUrl(
+            QtCore.QUrl(
+                f"file://{self.current_file_path(filename)}"
+            )
+        )
+
     def user_manual(self):
-        open('AcouSed_UserManual.pdf')
-        run(["open", 'AcouSed_UserManual.pdf'])
+        self.open_doc_file('AcouSed_UserManual.pdf')
 
     def inversion_acoustic_theory(self):
-        open('Acoustic_Inversion_theory.pdf')
-        run(["open", 'Acoustic_Inversion_theory.pdf'])
+        self.open_doc_file('Acoustic_Inversion_theory.pdf')
 
     def tutorial_AQUAscat_software(self):
-        open('Tutorial_AQUAscat_software.pdf')
-        run(["open", 'Tutorial_AQUAscat_software.pdf'])
+        self.open_doc_file('Tutorial_AQUAscat_software.pdf')
 
     def export_table_of_acoustic_BS_values_to_excel_or_libreOfficeCalc_file(self):
 
diff --git a/main.py b/main.py
index 0972456..9d45c0d 100644
--- a/main.py
+++ b/main.py
@@ -1,4 +1,5 @@
 import sys
+import logging
 import traceback
 
 from PyQt5.QtWidgets import QApplication, QMainWindow
@@ -26,6 +27,13 @@ import matplotlib.pyplot as plt
 PERCENT_SCREEN_SIZE = 0.85
 _translate = QCoreApplication.translate
 
+logging.basicConfig(
+    level=logging.DEBUG,
+    format=('[AcouSed][%(levelname)s] %(message)s')
+)
+
+logger = logging.getLogger()
+logger.setLevel(logging.INFO)
 
 class MainApplication(QMainWindow):
 
@@ -90,6 +98,9 @@ class MainApplication(QMainWindow):
         # ---------------- Text File Error -----------------
 
         except Exception as e:
+            logger.error(str(e))
+            logger.error(traceback.format_exc())
+
             with open("Error_file.txt", "w", encoding="utf-8") as sortie:
                 sortie.write(str(e))
                 sortie.write(traceback.format_exc())
diff --git a/manifest.scm b/manifest.scm
index 3f7d914..5d35665 100644
--- a/manifest.scm
+++ b/manifest.scm
@@ -210,4 +210,4 @@ user-defined extensions).")
               "python-scipy" "python-scikit-learn"
               "python-pyqt@5" "python-pyqt5-sip"
               "python-numpy@1" "python-pandas@1.5"
-              "python-matplotlib"))))
+              "python-matplotlib" "python-odfpy"))))
diff --git a/requirements.txt b/requirements.txt
new file mode 100644
index 0000000..10a565e
--- /dev/null
+++ b/requirements.txt
@@ -0,0 +1,13 @@
+matplotlib==3.6.3
+numpy==1.23.5
+pandas==1.5.3
+PyQt5==5.15.9
+PyQt5-Qt5==5.15.2
+PyQt5-sip==12.11.0
+python-dateutil==2.8.2
+scikit-learn==1.2.1
+scipy==1.10.0
+pyqt-file-list-widget==0.0.1
+qtrangeslider==0.1.5
+astropy==6.1.7
+odfpy==1.4.1