diff --git a/.github/workflows/ci-cd.yml b/.github/workflows/ci-cd.yml
index b9bbbf2..fcdc39a 100644
--- a/.github/workflows/ci-cd.yml
+++ b/.github/workflows/ci-cd.yml
@@ -4,7 +4,7 @@ on:
   push:
     branches: [ "master" ]
   pull_request:
-    branches: [ "master" ]
+    branches: [ "master", "vibe/streamlit-app-90c846" ]
 
 jobs:
   test:
@@ -19,14 +19,18 @@ jobs:
       with:
         python-version: "3.10"
     
-    - name: Install uv
-      run: pip install uv
+    - name: Install dependencies with conda
+      uses: conda-incubator/setup-miniconda@v3
+      with:
+        python-version: "3.10"
+        channels: conda-forge
+        channel-priority: strict
     
-    - name: Install dependencies
-      run: uv sync
+    - name: Install openturns
+      run: conda install -y openturns gpxpy matplotlib numpy pandas pytest
     
     - name: Run tests
-      run: uv run pytest test/ -v
+      run: python -m pytest test/ -v
 
   build-docs:
     name: Build Documentation
diff --git a/.gitignore b/.gitignore
index 3d439fd..3126860 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,3 +27,4 @@ uv.lock
 
 # Mistral memory file
 #MistralMemory.md
+# Trigger CI
diff --git a/README.md b/README.md
index 551a0fe..d9edc54 100644
--- a/README.md
+++ b/README.md
@@ -140,3 +140,4 @@ Contributions are welcome! Please open an issue or submit a pull request.
 - Inspired by the firstexample/gpxAnalyse.py script
 - Uses OpenTURNS for statistical analysis
 - Built with modern Python tooling (uv, pytest)
+# Test CI
diff --git a/src/otGpxTrack/Base.py b/src/otGpxTrack/Base.py
index 722fdff..45170d7 100644
--- a/src/otGpxTrack/Base.py
+++ b/src/otGpxTrack/Base.py
@@ -60,7 +60,7 @@ def __init__(self, gpx_file_path):
 
     def _load_gpx(self):
         """Load and parse the GPX file."""
-        with open(self.gpx_file_path, "r") as f:
+        with open(self.gpx_file_path, "rb") as f:
             self.gpx = gpxpy.parse(f)
 
     def _extract_points(self):
@@ -378,8 +378,8 @@ def simulate_ar1_speeds(self, segment_indices, sigma_tot=2.5, phi=0.9, n_sims=10
 
         # Calculate statistics using OpenTURNS
         mean_speed = v_simulees.computeMean()[0]
-        lower = ot.Sample.computeQuantilePerComponent(v_simulees, 0.025)[0]
-        upper = ot.Sample.computeQuantilePerComponent(v_simulees, 0.975)[0]
+        lower = ot.Sample.computeQuantilePerComponent(v_simulees, 0.025)[0][0]
+        upper = ot.Sample.computeQuantilePerComponent(v_simulees, 0.975)[0][0]
 
         return mean_speed, lower, upper, v_simulees
 
diff --git a/src/otGpxTrack/main.py b/src/otGpxTrack/main.py
index 89e7eff..53d6488 100644
--- a/src/otGpxTrack/main.py
+++ b/src/otGpxTrack/main.py
@@ -25,7 +25,7 @@ def __init__(self, gpx_file_path):
 
     def _load_gpx(self):
         """Load and parse the GPX file."""
-        with open(self.gpx_file_path, "r") as f:
+        with open(self.gpx_file_path, "rb") as f:
             self.gpx = gpxpy.parse(f)
 
     def _extract_points(self):
diff --git a/streamlitApp/app.py b/streamlitApp/app.py
index fb1c353..15f0f03 100644
--- a/streamlitApp/app.py
+++ b/streamlitApp/app.py
@@ -89,13 +89,15 @@ def main():
                 with cols[i]:
                     if (example_dir / example_file).exists():
                         if st.button(f"Load {example_file}", use_container_width=True):
+                            # Create a temporary file with the example content
                             with open(example_dir / example_file, "rb") as f:
-                                uploaded_file = f.read()
-                                uploaded_file = tempfile.NamedTemporaryFile(
-                                    delete=False, suffix=".gpx"
-                                )
-                                uploaded_file.write(uploaded_file)
-                                uploaded_file.seek(0)
+                                file_content = f.read()
+                            temp_file = tempfile.NamedTemporaryFile(
+                                delete=False, suffix=".gpx", mode='wb'
+                            )
+                            temp_file.write(file_content)
+                            temp_file.close()
+                            uploaded_file = temp_file
     
     if uploaded_file is not None:
         # Process the uploaded file
@@ -103,14 +105,16 @@ def main():
             with st.spinner("Processing GPX file..."):
                 # Save to temp file
                 if hasattr(uploaded_file, "name"):
+                    # This is a temp file from example loading
                     temp_file_path = uploaded_file.name
                 else:
+                    # This is a Streamlit UploadedFile
                     temp_file = tempfile.NamedTemporaryFile(
-                        delete=False, suffix=".gpx"
+                        delete=False, suffix=".gpx", mode='wb'
                     )
                     temp_file.write(uploaded_file.getvalue())
-                    temp_file_path = temp_file.name
                     temp_file.close()
+                    temp_file_path = temp_file.name
 
                 # Load the track
                 track = GpxTrack(temp_file_path)