Wikitude Version 7.2.1-7.2.0 for Unity sample project has two Instant Tracking samples (Instant Tracking, Scene Picking). Both samples crash always after short period of tracking on iOS11 iPads that do not support ARKit.
Sometimes crash occurs just seconds after starting tracking and sometimes it could take up to couple of minutes. Build made from the provided Wikitude sample Unity project with Unity 2017.3f3.
Can you please post the crash logs from the device? Could this be a memory issue?
The crashlog attached.
Thank you for attaching the crashlog. This issue will be resolved in the next update of the SDK.