diff --git a/device_server.py b/device_server.py
index 09cbc25..fb5dc1d 100644
--- a/device_server.py
+++ b/device_server.py
@@ -209,11 +209,16 @@ def control_video():
         if action == "start":
             if _video_proc is not None and _video_proc.poll() is None:
                 return jsonify({"status": "already_running", "pid": _video_proc.pid}), 200
-            _video_proc = subprocess.Popen(
-                ["python3", KIOSK_SCRIPT],
-                stdout=open("/tmp/kiosk.log", "w"),
-                stderr=subprocess.STDOUT,
-            )
+            try:
+                log = open("/tmp/kiosk.log", "w")
+                _video_proc = subprocess.Popen(
+                    ["python3", KIOSK_SCRIPT],
+                    stdout=log,
+                    stderr=subprocess.STDOUT,
+                    env=os.environ.copy(),
+                )
+            except Exception as e:
+                return jsonify({"error": f"failed to launch kiosk: {e}"}), 500
             return jsonify({"status": "started", "pid": _video_proc.pid}), 200
 
         elif action == "stop":
diff --git a/display_test_nexio.py b/display_test_nexio.py
index 54b5ae0..3fab83d 100644
--- a/display_test_nexio.py
+++ b/display_test_nexio.py
@@ -10,8 +10,8 @@ class KioskManager:
     def __init__(self, pipeline):
         self.pipeline = pipeline
         self.videos = [
-            "file:///root/python/vid.mp4",
-            "file:///root/python/vid2.mp4"
+            "file:///root/vid.mp4",
+            "file:///root/vid2.mp4"
         ]
         self.current_video_index = 0