# Magic Leap 2 MRTK 2.8 test app not running

**URL:** <https://forum.magicleap.cloud/t/magic-leap-2-mrtk-2-8-test-app-not-running/5471>\
**Category:** Unity Development\
**Tags:** mrtk-2\
**Created:** [April 7, 2025, 5:14pm UTC](https://forum.magicleap.cloud/t/magic-leap-2-mrtk-2-8-test-app-not-running/5471 "2025-04-07T17:14:25Z")\
**Posts on this page:** 3\
**Page:** 1

<div class="post-metadata">

**Author:** ![brs\_kes](https://avatars.discourse-cdn.com/v4/letter/b/97f17d/32.png) [@brs\_kes](https://forum.magicleap.cloud/u/brs_kes)\
**Post date:** [April 7, 2025, 5:14pm UTC](https://forum.magicleap.cloud/t/magic-leap-2-mrtk-2-8-test-app-not-running/5471/1 "2025-04-07T17:14:26Z")

</div>

Hi all,  
I am trying to run ‘Unity MRTK’ package from Hub 3 samples. Whatever I do I can’t start application on device, I see Unity splash screen and app closes immediately, I followed that document ‘[Set Up MRTK for Magic Leap 2 | MagicLeap Developer Documentation](https://developer-docs.magicleap.cloud/docs/guides/third-party/mrtk/mrtk-setup/)’  
and here is my MRTK ınput settings

 ![image](https://us1.discourse-cdn.com/flex019/uploads/magicleap1/original/2X/f/f7c75cd279ccb73f8ce08a307a52353138dc3144.png)  
Hope to hear any ideas

**Unity Editor version** :2022.3.51f  
**ML2 OS version** :1.12.0  
**Unity SDK version** :2.6.0  
**Host OS** : (Windows/MacOS):win 10

**Error messages from logs** Unable to register IMixedRealityInputDeviceManager data provider (Magic Leap HandTracking Input) because the value of concreteType is null.  
This may be caused by code being stripped during linking. The link.xml file in the MixedRealityToolkit.Generated folder is used to control code preservation.  
More information can be found at [Unity - Manual: Managed code stripping](https://docs.unity3d.com/Manual/ManagedCodeStripping.html).  
Microsoft.MixedReality.Toolkit.BaseDataProviderAccessCoreSystem:RegisterDataProviderInternal(Boolean, Type, String, SupportedPlatforms, Object)  
Microsoft.MixedReality.Toolkit.BaseDataProviderAccessCoreSystem:RegisterDataProvider(Type, String, SupportedPlatforms, Object)  
Microsoft.MixedReality.Toolkit.Input.MixedRealityInputSystem:CreateDataProviders()  
Microsoft.MixedReality.Toolkit.Input.MixedRealityInputSystem:Initialize()  
Microsoft.MixedReality.Toolkit.MixedRealityToolkit:ExecuteOnAllServicesInOrder(Action`1)  
Microsoft.MixedReality.Toolkit.MixedRealityToolkit:InitializeServiceLocator()  
Microsoft.MixedReality.Toolkit.Mix

---

<div class="post-metadata">

**Author:** ![brs\_kes](https://avatars.discourse-cdn.com/v4/letter/b/97f17d/32.png) [@brs\_kes](https://forum.magicleap.cloud/u/brs_kes)\
**Post date:** [April 7, 2025, 8:21pm UTC](https://forum.magicleap.cloud/t/magic-leap-2-mrtk-2-8-test-app-not-running/5471/2 "2025-04-07T20:21:24Z")

</div>

Finally, after tons of trying when I disable Hand Tracking from OpenXR menu it’s fixed.

---

<div class="post-metadata">

**Author:** ![system](https://us1.discourse-cdn.com/flex019/uploads/magicleap1/original/1X/bd9b737a4d45ea243aa7eb177d60a773b806899a.svg) [@system](https://forum.magicleap.cloud/u/system)\
**Post date:** [April 21, 2025, 8:22pm UTC](https://forum.magicleap.cloud/t/magic-leap-2-mrtk-2-8-test-app-not-running/5471/3 "2025-04-21T20:22:13Z")

</div>

This topic was automatically closed 14 days after the last reply. New replies are no longer allowed.