# Scene Graph - Editor crashes on selecting entity in details pannel

**URL:** <https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700>\
**Category:** Issues and Bug Reporting\
**Tags:** fortnite-creative, unreal-editor-for-fortnite, fortnite\
**Created:** [May 21, 2025, 3:40am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700 "2025-05-21T03:40:16Z")\
**Posts on this page:** 9\
**Page:** 1

<div class="post-metadata">

**Author:** ![Konerds](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Konerds](https://forums.unrealengine.com/u/Konerds)\
**Post date:** [May 21, 2025, 3:40am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/1 "2025-05-21T03:40:16Z")

</div>

### Summary

Try to connect entity in custom verse component, editor keeps crashing.

### Please select what you are reporting on:

UEFN - Scene graph

### What Type of Bug are you experiencing?

Editor crashes

### Steps to Reproduce

1. Similar as example [Create Platformer 02 Moving Entities Using Animations in Scene Graph in Unreal Editor for Fortnite | Fortnite Documentation | Epic Developer Community](https://dev.epicgames.com/documentation/en-us/uefn/moving-entities-using-animations-in-scene-graph-in-unreal-editor-for-fortnite)

2. Here’s verse code

```verse
using { /Verse.org }
using { /Verse.org/Native }
using { /Verse.org/SceneGraph }
using { /Verse.org/Simulation }
using { /Verse.org/SceneGraph/KeyframedMovement }

animation_sequence_holder_component<public> := class<final_super>(component):

    @editable
    var AnimationKey<public>:string = "Default"

    @editable
    var KeyframeSegments<public>:[]keyframe_segment = array{}

    OnBeginSimulation<override>():void =
        (super:)OnBeginSimulation()

    GetKeyframeSegements<public>()<transacts>:[]keyframe_segment =
        KeyframeSegments

keyframe_segment<public> := class<concrete>:
    @editable
    TargetEntity:?entity = false

    @editable
    AnimationDuration:float = 2.0

    @editable
    EasingFunction:?easing_function = false

    @editable
    AfterPauseSeconds:?float = false

```

1. Place component in some entity, I connect other child entities in keyframe\_segment. It was going well, but then it kept crashing at some point.

### Expected Result

Add entity to member.

### Observed Result

Editor crashes

### Platform(s)

UEFN editor

### Upload an image

![Scene graph - editor crash.gif](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/d/b/7dbbdb96d9342d66609fed4d1181b4affb86bf7e.gif)

---

<div class="post-metadata">

**Author:** ![Konerds](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Konerds](https://forums.unrealengine.com/u/Konerds)\
**Post date:** [May 21, 2025, 3:40am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/2 "2025-05-21T03:40:54Z")

</div>

Here’s logs file  
[Logs.zip](https://forums.unrealengine.com/uploads/short-url/ciBIJq1dmCDN33XcCXP9RDEeUU3.zip) (12.5 MB)

---

<div class="post-metadata">

**Author:** ![Konerds](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Konerds](https://forums.unrealengine.com/u/Konerds)\
**Post date:** [May 21, 2025, 4:56am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/3 "2025-05-21T04:56:04Z")

</div>

similar issue here

> [@\[MAJOR\] Scene Graph - Editor closes without any crash logs when setting an editable entity](https://forums.unrealengine.com/t/major-scene-graph-editor-closes-without-any-crash-logs-when-setting-an-editable-entity/2495218):
>
> Summary In some concrete configurations (it’s unclear what exactly causes it, deep nesting or maybe even similar entity names that cause name collision internally) the editor straight closes itself without generating any reliable logs or even crash logs. Sometimes the editor also closes when batch deleting a group of entities, but I don’t have a reproducible project setup for this scenario. Please select what you are reporting on: Unreal Editor for Fortnite What Type of Bug are you experienci…

---

<div class="post-metadata">

**Author:** ![Konerds](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Konerds](https://forums.unrealengine.com/u/Konerds)\
**Post date:** [May 21, 2025, 5:24am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/4 "2025-05-21T05:24:07Z")

</div>

[![](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/6/a/36a995f0b76926934cb8fa44f36c37915fba79d6.jpeg "scene graph editor crash") ](https://www.youtube.com/watch?v=IVre-T7ZXiU)

Here’s my reproducing record  
and the logs file at the moment  
[Logs.zip](https://forums.unrealengine.com/uploads/short-url/dKbGj1XoeNdnZTJQb7YCH0iJwSd.zip) (16.9 MB)

---

<div class="post-metadata">

**Author:** ![Konerds](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Konerds](https://forums.unrealengine.com/u/Konerds)\
**Post date:** [May 21, 2025, 7:05am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/5 "2025-05-21T07:05:07Z")

</div>

I think the problem has planted when copying grouped entity.

```auto
- parent_entity
  - group1
    - child1
    - child2

```

When copying group1 (Ctrl+C, Ctrl+V), it looks like this

```auto
- parent_entity
  - group1
    - child1
    - child2
  - entity // <- This is the copied group. It gets a new name ("entity" by default) and a new hash value.
    - child1 // <- This child has the SAME name and SAME hash value as the original group1/child1.
    - child2 // <- This child has the SAME name and SAME hash value as the original group1/child2.

```

The original copying flow makes new entity and named it “entity” and different hash value has made.  
However, childs(child1, child2) has same name and same hash value. It might be a problem I guess.

So copying grouped entity seems fine but plants bug. After copying, renaming and selecting entity might occurs editor crash. But I’m not sure how to make it 100% happen. Keep copying grouped entity and renaming and registering entity in component using details panel soon crashes editor. If once happen, same process will emit crash.

Here’s renaming crash reproduce records.

[](https://www.youtube.com/watch?v=J8j1KRaTnB4)

(06:10 crash)

---

<div class="post-metadata">

**Author:** ![Konerds](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Konerds](https://forums.unrealengine.com/u/Konerds)\
**Post date:** [May 21, 2025, 7:27am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/6 "2025-05-21T07:27:36Z")

</div>

Here’s the simplest reproduction and logs file

[](https://www.youtube.com/watch?v=qJUFi3yh42s)

[Logs.zip](https://forums.unrealengine.com/uploads/short-url/mEqmSx89w2ITxobYotiVhWDpRVZ.zip) (20.1 MB)

---

<div class="post-metadata">

**Author:** ![Jimbohalo10](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/jimbohalo10/32/961440_2.png) [@Jimbohalo10](https://forums.unrealengine.com/u/Jimbohalo10)\
**Post date:** [May 21, 2025, 10:54am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/7 "2025-05-21T10:54:39Z")

</div>

> [@Konerds](#):
>
> Similar as example [Moving Entities Using Animations in Scene Graph in Unreal Editor for Fortnite | Unreal Editor for Fortnite Documentation | Epic Developer Community](https://dev.epicgames.com/documentation/en-us/uefn/moving-entities-using-animations-in-scene-graph-in-unreal-editor-for-fortnite)

hi @Konerds, this is surprising that the example fails so easily. This may be beta, but there are no known issues since 34.10  
[Fortnite Ecosystem v34.10 with Known Issues - General / Announcements - Epic Developer Community Forums](https://forums.unrealengine.com/t/fortnite-ecosystem-v34-10-with-known-issues/2384768/14)  
[Scene graph Update](https://dev.epicgames.com/documentation/en-us/uefn/34-10-fortnite-ecosystem-updates-and-release-notes#scenegraphupdate)

Looking at the last log there is a crash in Unreal Revision Control urc.exe and no obvious reason for this. My skill is in reading UEFN logs urc.exe should NOT crash.

the only urc problem was below and dont think its that  
[urc.exe and urc.dll get flagged as Malware from Microsoft Defender - General / Issues and Bug Reporting - Epic Developer Community Forums](https://forums.unrealengine.com/t/urc-exe-and-urc-dll-get-flagged-as-malware-from-microsoft-defender/1802519/2)

So thats why I am voting this up

---

<div class="post-metadata">

**Author:** ![Flak](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/flak/32/769441_2.png) [@Flak](https://forums.unrealengine.com/u/Flak)\
**Post date:** [May 21, 2025, 12:29pm UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/8 "2025-05-21T12:29:24Z")

</div>

Reminder - Please don’t edit your post after submitting, add a second post instead. Since the second entry was changed, we are unable to escalate this to a ticket.

We’ll get this in front of the devs.

---

<div class="post-metadata">

**Author:** ![system](https://d3kjluh73b9h9o.cloudfront.net/original/4X/7/1/3/713c9d3f58553f0de89543d76a8a3a2779dc9fa4.png) [@system](https://forums.unrealengine.com/u/system)\
**Post date:** [November 17, 2025, 3:40am UTC](https://forums.unrealengine.com/t/scene-graph-editor-crashes-on-selecting-entity-in-details-pannel/2520700/9 "2025-11-17T03:40:28Z")

</div>

This topic was automatically closed after 180 days. New replies are no longer allowed.