diff --git a/pyproject.toml b/pyproject.toml
index da21711..bdb7b67 100644
--- a/pyproject.toml
+++ b/pyproject.toml
@@ -8,7 +8,7 @@ description = "A tool to measure pictures with scale_bars"
 requires-python = ">=3.10"
 license = { file = "LICENSE" }
 dependencies = [
-    'numpy',
+    'numpy<2.0',
     'vispy>=0.14.3',
     'PyQt6',
     'pyopengl',
diff --git a/run.py b/run.py
index 4e14935..054c453 100644
--- a/run.py
+++ b/run.py
@@ -11,6 +11,6 @@
     )
     logger = logging.getLogger("Measury")
     logger.setLevel(logging.INFO)
-    # measury.run(logger=logger)
-    measury.run(file_path=script_dir/r"tests/test_data/test_file.msry", logger=logger)
+    measury.run(logger=logger)
+    # measury.run(file_path=script_dir/r"tests/test_data/test_file.msry", logger=logger)
 # 
\ No newline at end of file
diff --git a/src/measury/main_ui.py b/src/measury/main_ui.py
index f3048d7..5dd516b 100644
--- a/src/measury/main_ui.py
+++ b/src/measury/main_ui.py
@@ -248,8 +248,11 @@ def update_object_table(self, object=None):
             object = self.vispy_canvas.get_selected_object()
             
         # selection table
-        self.update_full_table = True # to prevent triggering cell_content_changed
         self.clear_object_table()
+        if object is None:
+            return
+        
+        self.update_full_table = True # to prevent triggering cell_content_changed
 
         props = object.output_properties()
         self.selected_object_table.setRowCount(len(props.keys()))