# Unity hand tracking seems to crash ZI

**URL:** <https://forum.magicleap.cloud/t/unity-hand-tracking-seems-to-crash-zi/844>\
**Category:** App Simulator\
**Created:** [September 12, 2022, 9:31pm UTC](https://forum.magicleap.cloud/t/unity-hand-tracking-seems-to-crash-zi/844 "2022-09-12T21:31:03Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![rmuk](https://avatars.discourse-cdn.com/v4/letter/r/dec6dc/32.png) [@rmuk](https://forum.magicleap.cloud/u/rmuk)\
**Post date:** [September 12, 2022, 9:31pm UTC](https://forum.magicleap.cloud/t/unity-hand-tracking-seems-to-crash-zi/844/1 "2022-09-12T21:31:03Z")

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When using hand-tracking in conjunction with ZI, the ZI application on the headset seems to lock up as soon as a hand is detected. Other demos run fine, and the hand tracking demo scene (in unity) runs just fine until i bring my hands into view. Has anyone seen this before? If i build and run the scene natively on the headset it works just fine.

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**Author:** ![sengelman](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.magicleap.cloud/sengelman/32/11_2.png) [@sengelman](https://forum.magicleap.cloud/u/sengelman)\
**Post date:** [September 14, 2022, 2:05am UTC](https://forum.magicleap.cloud/t/unity-hand-tracking-seems-to-crash-zi/844/2 "2022-09-14T02:05:25Z")

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@rmuk We have some incremental improvements regarding both the App Simulator (formerly Zero Iteration/ZI) and HandTracking in our [September Software Release - #2 by sengelman](https://forum.magicleap.cloud/t/september-software-release/849/2).

Can you confirm if this still occurs with a fresh installation of the Magic Leap Hub and the App Simulator?

There should have been a template available with this Category that pre-populated some fields for versions. Those things would speed up the process.

Can you confirm, after upgrading, your versions of the following:

**Unity editor** :  
**Unity SDK version** :  
**Magic Leap Hub version** :  
**Magic Leap App Simulator version** :

This page will also explain how to retrieve diagnostic logs that you can send to use, where we can get the best inference of what may be happening.

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**Author:** ![kdowney](https://sea1.discourse-cdn.com/flex019/user_avatar/forum.magicleap.cloud/kdowney/32/481_2.png) [@kdowney](https://forum.magicleap.cloud/u/kdowney)\
**Post date:** [October 24, 2022, 8:08pm UTC](https://forum.magicleap.cloud/t/unity-hand-tracking-seems-to-crash-zi/844/3 "2022-10-24T20:08:36Z")

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Closing due to inactivity. Thanks for stopping by the Magic Leap 2 forum.