# LiDAR plugin for UE 5.1 crashes editor on install

**URL:** <https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790>\
**Category:** Pipeline & Plugins\
**Tags:** unreal-engine, question\
**Created:** [December 19, 2022, 2:14pm UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790 "2022-12-19T14:14:25Z")\
**Posts on this page:** 8\
**Page:** 1

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**Author:** ![TECHGUNK](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/techgunk/32/897277_2.png) [@TECHGUNK](https://forums.unrealengine.com/u/TECHGUNK)\
**Post date:** [December 19, 2022, 2:14pm UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/1 "2022-12-19T14:14:25Z")

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I’ve been trying to install the LiDAR plugin but can’t get it to work. Tested on three computers all with the same result and it’s currently being a bit of a blocker in our pipeline. Anyone got any ideas if it can be fixed?

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**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\
**Post date:** [December 20, 2022, 12:52am UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/2 "2022-12-20T00:52:26Z")

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Hi Techgunk,

It could just be a ‘lost in translation’ thing, but there is a LiDAR plugin that is already “Installed” with 5.1 but is deactivated by default.

Edit → Plugins → ‘Lidar Point Cloud Support’

Is this the plugin you’re referring to?

I was able to enable this plugin in my 5.1 project without a crash.

Assuming this is the plugin you want, if you enable it in a newly-created project does it still crash?

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<div class="post-metadata">

**Author:** ![TECHGUNK](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/techgunk/32/897277_2.png) [@TECHGUNK](https://forums.unrealengine.com/u/TECHGUNK)\
**Post date:** [December 20, 2022, 10:54am UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/3 "2022-12-20T10:54:47Z")

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Thanks for the reply! Yes, I was pretty unclear but that’s what I meant 🙂 I’m enabling the built-in plugin but I’ve only had crashes when installing ☹  
I’ve tried to start both a blank project and a VR project with the same result.

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<div class="post-metadata">

**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\
**Post date:** [December 21, 2022, 2:12am UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/4 "2022-12-21T02:12:57Z")

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Oh wow,

The 3 computers you tested on were Windows right?

Is there a callstack that appears when you crash? If yes, what does it say?

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<div class="post-metadata">

**Author:** ![TECHGUNK](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/techgunk/32/897277_2.png) [@TECHGUNK](https://forums.unrealengine.com/u/TECHGUNK)\
**Post date:** [December 21, 2022, 12:10pm UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/5 "2022-12-21T12:10:58Z")

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I’ve now been successful in getting it to work in a normal blank project! 🥳 tho I still have a problem that all the colors are inverted, any ideas?  
But I still get crashes every time the plugin is enabled in the VR preset

This is what I get at crash:  
Fatal error: [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\ShaderCompiler\ShaderCompiler.cpp] [Line: 4668] /Plugin/LidarPointCloud/Private/LidarPointCloudVertexFactory.ush:242:30: warning: ambiguous type for bit shift; use a type suffix on literal values, like ‘L’ or ‘U’, or a cast [-Wambig-lit-shift] if ((ChildrenBitmask & (1 \<\< ChildNodeIndex)) == 0) ^ /Plugin/LidarPointCloud/Private/LidarPointCloudVertexFactory.ush:255:31: warning: ambiguous type for bit shift; use a type suffix on literal values, like ‘L’ or ‘U’, or a cast [-Wambig-lit-shift] if ((ChildrenBitmask & (1 \<\< i)) != 0) ^ /Engine/Private/DebugViewModeVertexShader.usf:56:57: error: no member named ‘InstanceId’ in ‘FVertexFactoryInput’ const uint EyeIndex = (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) ; ~~~~~^ /Engine/Private/DebugViewModeVertexShader.usf:59:64: error: no member named ‘InstanceId’ in ‘FVertexFactoryInput’ ResolvedView = (ResolveView( (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) )) ;~~~~~ ^ D3DCompileToDxil failed. Error code: Unspecified error (0x80004005). /Engine/Private/BasePassVertexShader.usf:40:57: error: no member named ‘InstanceId’ in ‘FVertexFactoryInput’ const uint EyeIndex = (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) ; ~~~~~^ /Engine/Private/BasePassVertexShader.usf:45:64: error: no member named ‘InstanceId’ in ‘FVertexFactoryInput’ ResolvedView = (ResolveView( (IsInstancedStereo() ? ( (Input.InstanceId) & 1) : 0) )) ;~~~~~ ^ /Engine/Private/PositionOnlyDepthVertexShader.usf:23:57: error: no member

UnrealEditor\_Engine  
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kernel32  
ntdll

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<div class="post-metadata">

**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\
**Post date:** [December 22, 2022, 6:34pm UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/6 "2022-12-22T18:34:42Z")

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Ok, I have found the solution.

I saw that ‘InstancedStereo’ was mentioned in the callstack.

Sure enough - if Instanced Stereo is on (off by default, but enabled by default in VR Template) the crash can be reproduced by enabling the Lidar plugin.

To fix your crashing projects:

Open yourproject/Config/DefaultEngine.ini and change vr.InstancedStereo to False

If using instanced stereo and lidar at the same time is important, consider [reporting this bug](https://www.unrealengine.com/en-US/support/report-a-bug).

~

Inverted lidar point colors could be a problem with your pipeline. There are some datasets in this [marketplace pack](https://www.unrealengine.com/marketplace/en-US/product/lidar-point-cloud-sample) that should show correct color formatting etc.

Create another thread for troubleshooting inverted colors if you’re still having difficulties.

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<div class="post-metadata">

**Author:** ![vmagalhaes\_abyss](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@vmagalhaes\_abyss](https://forums.unrealengine.com/u/vmagalhaes_abyss)\
**Post date:** [February 9, 2023, 11:15am UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/7 "2023-02-09T11:15:31Z")

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I’ve had the same issue as you for my VR project, the editor was crashing on load with those errors and I had issues pinpointing it to the LidarPointCloud Plugin.

For some reason I had that plugin turned on and wasn’t using it and couldn’t understand how migrating to 5.1 was crashing it. Luckily I ran into this post and fixed the issue (in my case, I turned off the plugin, but turning InstancedStereo off could also fix it)

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<div class="post-metadata">

**Author:** ![Astrotronic](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/astrotronic/32/1194566_2.png) [@Astrotronic](https://forums.unrealengine.com/u/Astrotronic)\
**Post date:** [February 9, 2023, 4:28pm UTC](https://forums.unrealengine.com/t/lidar-plugin-for-ue-5-1-crashes-editor-on-install/731790/8 "2023-02-09T16:28:55Z")

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Hi all,

I’m happy to report that this bug has been entered into the bug tracking database and is publicly viewable at [UE-175226](https://issues.unrealengine.com/issue/UE-175226)