osvr_server log

July 23 19:18:25.322 info [OSVR]: Logging for /usr/bin/osvr_server
July 23 19:18:25.322 info [OSVR Server]: Using config file /usr/share/osvrcore/sample-configs/osvr_server_config.UnifiedVideoTracker.HDK13DirectLandscape.json from command line argument.
July 23 19:18:25.322 info [OSVR Server]: Attempting to load config file '/usr/share/osvrcore/sample-configs/osvr_server_config.UnifiedVideoTracker.HDK13DirectLandscape.json'.
July 23 19:18:25.322 info [OSVR Server]: Constructing server as configured...
July 23 19:18:25.322 info [OSVR Server]: Loading auto-loadable plugins...
July 23 19:18:25.363 info [OSVR Server]: Loading plugins...
July 23 19:18:25.363 info [OSVR Server]: Instantiating configured drivers...
Caught exception initializing UVC camera image source: Error finding requested camera: No such device
Could not access the tracking camera, skipping video-based tracking!
July 23 19:18:25.365 error [OSVR Server]: Errors:
July 23 19:18:25.365 error [OSVR Server]:  - org_osvr_unifiedvideoinertial/UnifiedTrackingSystem        Failure returned from driver initialization callback by name UnifiedTrackingSystem
July 23 19:18:25.365 info [OSVR Server]: Aliases found and parsed from config file.
July 23 19:18:25.365 info [OSVR Server]: Display descriptor found and parsed from config file.
July 23 19:18:25.365 info [OSVR Server]: RenderManager config found and parsed from the config file.
July 23 19:18:25.365 info [OSVR Server]: Triggering automatic hardware detection...
July 23 19:18:25.365 info [OSVR Server]: Registering shutdown handler...
July 23 19:18:25.365 info [OSVR Server]: Starting server mainloop: OSVR Server is ready to go!
July 23 19:18:25.365 info [OSVR Server]: Performing hardware auto-detection.
July 23 19:18:25.474 info [OSVR Server]: Added device: com_osvr_Multiserver/OSVRHackerDevKit0
July 23 19:18:25.474 info [OSVR Server]: Added device: com_osvr_Multiserver/OSVRHackerDevKitPrediction0
July 23 19:18:25.528 info [OSVR Server]: Sent path tree to clients.