Hi Cesar, iOS: Can you please varify that the path to the ARchitect World is correct? You need to take care with relative paths for Worlds that are bundled with your application. Loading an ARchitect World from a server might be also a debug option. Otherwise you can enable Web Inspector on your iOS device and use Safari to see if the web view can handle the load request. You could also impl. the ArchitectViewDelegate and check if any error is reported during the loading process.