# \#problems **URL:** https://forums.unrealengine.com/tag/problems/2921.md [Latest](https://forums.unrealengine.com/latest.md) · [Categories](https://forums.unrealengine.com/categories.md) · [Tags](https://forums.unrealengine.com/tags.md) --- ## [Survey: the hardest UE5 multiplayer / GAS problem you hit in the last 90 days (2 min)](https://forums.unrealengine.com/t/survey-the-hardest-ue5-multiplayer-gas-problem-you-hit-in-the-last-90-days-2-min/2841523)
**Author:** [@LMXLion](https://forums.unrealengine.com/u/LMXLion)\ **Replies:** 0\ **Last updated:** [October 16, 2026, 7:48am UTC](https://forums.unrealengine.com/t/survey-the-hardest-ue5-multiplayer-gas-problem-you-hit-in-the-last-90-days-2-min/2841523 "2026-10-16T07:48:33Z")
Hi fellow developers, I’m collecting real-world cases (desync, prediction, GAS in multiplayer, dedicated servers, performance) to see which ones cost teams the most time. All questions are optional and anonymous unless … --- ## [Problem with textures in XVERSE/XCENE ](https://forums.unrealengine.com/t/problem-with-textures-in-xverse-xcene/2721495)
**Author:** [@udonq1](https://forums.unrealengine.com/u/udonq1)\ **Replies:** 2\ **Last updated:** [May 12, 2026, 3:13pm UTC](https://forums.unrealengine.com/t/problem-with-textures-in-xverse-xcene/2721495 "2026-05-12T15:13:30Z")
Hi, I am trying to use Xverse in my project, but when I import my .ply, I don’t see any textures. I attached two images below, the first one shows how it should look and the second how it looks in Unreal. I tried to ch… --- ## [Cloth collision bug/problem (spins around like crazy) and cloth falling apart](https://forums.unrealengine.com/t/cloth-collision-bug-problem-spins-around-like-crazy-and-cloth-falling-apart/1302192)
**Author:** [@Pedrobruce](https://forums.unrealengine.com/u/Pedrobruce)\ **Replies:** 9\ **Last updated:** [May 6, 2026, 7:50pm UTC](https://forums.unrealengine.com/t/cloth-collision-bug-problem-spins-around-like-crazy-and-cloth-falling-apart/1302192 "2026-05-06T19:50:55Z")
Hello, I’m having an issue where the clothing for Shinbi (a paragon character) goes crazy and starts spinning insanely fast. This error stops when de-activating self collisions, however, I need the cloth to collide with … --- ## [Patrol Location Vector Invalid](https://forums.unrealengine.com/t/patrol-location-vector-invalid/773575)
**Author:** [@Phin\_The\_Platy](https://forums.unrealengine.com/u/Phin_The_Platy)\ **Replies:** 3\ **Last updated:** [February 2, 2026, 3:15pm UTC](https://forums.unrealengine.com/t/patrol-location-vector-invalid/773575 "2026-02-02T15:15:08Z")
Okay so,long story short im making a behaviour tree for an enemy but it never goes in patrol; i doubt is a nav mesh problem cause in chase and attack he calmly steps upon the said nav mesh. But it doesn’t even consider t… --- ## [Nav mesh problems after open level](https://forums.unrealengine.com/t/nav-mesh-problems-after-open-level/472535)
**Author:** [@Szr2001](https://forums.unrealengine.com/u/Szr2001)\ **Replies:** 5\ **Last updated:** [October 14, 2025, 6:17am UTC](https://forums.unrealengine.com/t/nav-mesh-problems-after-open-level/472535 "2025-10-14T06:17:06Z")
i am making a android game, i have 3 levels. one is Main menu. that has a button that opens another level by name. After opening that level nav mesh stops working. i have force rebuild on start, i tryed the console com… --- ## [EDITOR CRASHES WHEN OPENING A BLUEPRINT (RIGVM ???)](https://forums.unrealengine.com/t/editor-crashes-when-opening-a-blueprint-rigvm/2366583)
**Author:** [@olzug](https://forums.unrealengine.com/u/olzug)\ **Replies:** 2\ **Last updated:** [October 9, 2025, 6:51pm UTC](https://forums.unrealengine.com/t/editor-crashes-when-opening-a-blueprint-rigvm/2366583 "2025-10-09T18:51:14Z")
The editor crashes only when opening a blueprint the error message is “Unhandled Exception: EXCEPTION\_ACCESS\_VIOLATION reading address 0x0000000000000008” and it says stuff about RigVM a plugin or something but for som… --- ## [How to make multiple islands, pls help!](https://forums.unrealengine.com/t/how-to-make-multiple-islands-pls-help/2663139)
**Author:** [@aleksizz](https://forums.unrealengine.com/u/aleksizz)\ **Replies:** 0\ **Last updated:** [October 7, 2025, 10:07pm UTC](https://forums.unrealengine.com/t/how-to-make-multiple-islands-pls-help/2663139 "2025-10-07T22:07:58Z")
how to make multiple voxel islands instead of one here is voxel code: and world terrain: --- ## [Reflection and light not working](https://forums.unrealengine.com/t/reflection-and-light-not-working/2577351)
**Author:** [@gelokofofokoleg](https://forums.unrealengine.com/u/gelokofofokoleg)\ **Replies:** 10\ **Last updated:** [June 29, 2025, 5:25am UTC](https://forums.unrealengine.com/t/reflection-and-light-not-working/2577351 "2025-06-29T05:25:04Z")
Hello I’m running into a problem and would like some help. My problem is that my reflections seem to be broken. When ever I look into the reflections there is a lot of black and the objects are not clear. Here is an e… --- ## [Cant launch Session ](https://forums.unrealengine.com/t/cant-launch-session/2557326)
**Author:** [@Scheues\_Igli](https://forums.unrealengine.com/u/Scheues_Igli)\ **Replies:** 0\ **Last updated:** [June 14, 2025, 9:08pm UTC](https://forums.unrealengine.com/t/cant-launch-session/2557326 "2025-06-14T21:08:26Z")
I cant launch a session in UEFN it says that I have to update the Editor but there is nnothing to update. Can please someone help :folded\_hands:? --- ## [Error in UEFN Verse](https://forums.unrealengine.com/t/error-in-uefn-verse/2408662)
**Author:** [@FedorOrehshek](https://forums.unrealengine.com/u/FedorOrehshek)\ **Replies:** 4\ **Last updated:** [April 8, 2025, 1:55pm UTC](https://forums.unrealengine.com/t/error-in-uefn-verse/2408662 "2025-04-08T13:55:49Z")
Hello, today I was making a script for the rank system, but then I decided to delete it, but it’s not that simple. I deleted it, I thought everything would be fine, but then there’s a problem. There are 3 errors in the c… --- ## [Twinmotion 2025.1 bug (?) shade stripes in path tracer rendering ](https://forums.unrealengine.com/t/twinmotion-2025-1-bug-shade-stripes-in-path-tracer-rendering/2436232)
**Author:** [@margheenri](https://forums.unrealengine.com/u/margheenri)\ **Replies:** 0\ **Last updated:** [April 2, 2025, 2:39pm UTC](https://forums.unrealengine.com/t/twinmotion-2025-1-bug-shade-stripes-in-path-tracer-rendering/2436232 "2025-04-02T14:39:33Z")
Hello everyone, I have an issue that I can’t solve: I don’t know why but when I try to render in path tracer something goes wrong and some ‘‘shadow stripes’’ appears on vertical objects. Attached a image to show you. … --- ## [i can't add tag to my new list ? ](https://forums.unrealengine.com/t/i-cant-add-tag-to-my-new-list/2309721)
**Author:** [@ABDELLA216](https://forums.unrealengine.com/u/ABDELLA216)\ **Replies:** 0\ **Last updated:** [January 30, 2025, 2:03am UTC](https://forums.unrealengine.com/t/i-cant-add-tag-to-my-new-list/2309721 "2025-01-30T02:03:44Z")
Summary i can’t add tag to my new list ? What type of bug are you experiencing? Documentation URL where the bug was encountered Steps to Reproduce 1 Expected Result adding tags and post Observed Result try to addin… --- ## [AR Background Appears as a Static Texture Instead of Camera Feed in UE5](https://forums.unrealengine.com/t/ar-background-appears-as-a-static-texture-instead-of-camera-feed-in-ue5/1799332)
**Author:** [@Matavsn](https://forums.unrealengine.com/u/Matavsn)\ **Replies:** 2\ **Last updated:** [December 18, 2024, 10:01am UTC](https://forums.unrealengine.com/t/ar-background-appears-as-a-static-texture-instead-of-camera-feed-in-ue5/1799332 "2024-12-18T10:01:39Z")
I’ve been developing an AR project using Unreal Engine 5 and have encountered an issue where the background is displayed as a static texture rather than the live camera feed during AR sessions. The expected behavior is t… --- ## [Having issues with packaging, not sure what the issue is.](https://forums.unrealengine.com/t/having-issues-with-packaging-not-sure-what-the-issue-is/2137774)
**Author:** [@Yipsy1](https://forums.unrealengine.com/u/Yipsy1)\ **Replies:** 0\ **Last updated:** [November 20, 2024, 2:43pm UTC](https://forums.unrealengine.com/t/having-issues-with-packaging-not-sure-what-the-issue-is/2137774 "2024-11-20T14:43:54Z")
Hello! I’m new to Unreal Engine, and I just got done making a simple game in UE5. I tried to package/cook the game, but both failed. The game is coded in blueprints. I’m stuck on what I’m supposed to do the solve this pr… --- ## [Hello, can you help me what is this error?](https://forums.unrealengine.com/t/hello-can-you-help-me-what-is-this-error/2132549)
**Author:** [@FedorOrehshek](https://forums.unrealengine.com/u/FedorOrehshek)\ **Replies:** 4\ **Last updated:** [November 18, 2024, 1:15pm UTC](https://forums.unrealengine.com/t/hello-can-you-help-me-what-is-this-error/2132549 "2024-11-18T13:15:36Z")
I started uploading a map through UEFN and got this error? I don’t understand what to do, how to fix it. Can you please help. I will be very grateful! --- ## [Graffiti problem in fortnite UEFN creative on my map](https://forums.unrealengine.com/t/graffiti-problem-in-fortnite-uefn-creative-on-my-map/2104465)
**Author:** [@FedorOrehshek](https://forums.unrealengine.com/u/FedorOrehshek)\ **Replies:** 17\ **Last updated:** [November 8, 2024, 1:01pm UTC](https://forums.unrealengine.com/t/graffiti-problem-in-fortnite-uefn-creative-on-my-map/2104465 "2024-11-08T13:01:52Z")
Hello. I have some problem with UEFN editor with graffiti. I have a problem, I made a map of a battle of sets (battle of equipment) and at one of the stages you need to evaluate a person’s graffiti, but the graffiti simp… --- ## [Jumping animation not working as intended](https://forums.unrealengine.com/t/jumping-animation-not-working-as-intended/2043093)
**Author:** [@Anonymous\_3e77bb8846f62db58645d78e7114d1c9](https://forums.unrealengine.com/u/Anonymous_3e77bb8846f62db58645d78e7114d1c9)\ **Replies:** 1\ **Last updated:** [September 28, 2024, 11:42pm UTC](https://forums.unrealengine.com/t/jumping-animation-not-working-as-intended/2043093 "2024-09-28T23:42:23Z")
Hi, so I have been having an issue setting up my running, running to jump and falling and falling from high height states. Before I explain my problem, I will explain what I am trying to achieve. What I am trying to achi… --- ## [Nanite x Custom Material not working (disappearing, when using Nanite and Tesselation) UE 5.3](https://forums.unrealengine.com/t/nanite-x-custom-material-not-working-disappearing-when-using-nanite-and-tesselation-ue-5-3/1754472)
**Author:** [@Ichhhhnicht.exe](https://forums.unrealengine.com/u/Ichhhhnicht.exe)\ **Replies:** 5\ **Last updated:** [June 5, 2024, 5:22am UTC](https://forums.unrealengine.com/t/nanite-x-custom-material-not-working-disappearing-when-using-nanite-and-tesselation-ue-5-3/1754472 "2024-06-05T05:22:51Z")
Problems with nanite and custom displaced material using tessellation: I built a custom material with the displacement map with this tutorial: https://www.youtube.com/watch?v=QnJiYp2Y00s and with the help of this one: h… --- ## [Anim Notify issues with replication in Gameplay Ability](https://forums.unrealengine.com/t/anim-notify-issues-with-replication-in-gameplay-ability/1814918)
**Author:** [@RyukuX](https://forums.unrealengine.com/u/RyukuX)\ **Replies:** 0\ **Last updated:** [April 22, 2024, 3:48am UTC](https://forums.unrealengine.com/t/anim-notify-issues-with-replication-in-gameplay-ability/1814918 "2024-04-22T03:48:57Z")
I’m having an issue with my equipping and holstering weapon ability: Gameplay Issue for Holstering posted by Ryuku | blueprintUE | PasteBin For Unreal Engine That’s the blueprint The associated code for the AttachGun f… --- ## [Ragdoll system spining around own Axis (Z)](https://forums.unrealengine.com/t/ragdoll-system-spining-around-own-axis-z/1814118)
**Author:** [@Dinozaurzabijak](https://forums.unrealengine.com/u/Dinozaurzabijak)\ **Replies:** 0\ **Last updated:** [April 21, 2024, 3:22pm UTC](https://forums.unrealengine.com/t/ragdoll-system-spining-around-own-axis-z/1814118 "2024-04-21T15:22:06Z")
I’m a beginner in Unreal Engine 5 and I still don’t quite know how everything works and where everything is located… While fixing animation errors related to getting up, including adding interaction between the foot and … --- ## [Array operations on structures.](https://forums.unrealengine.com/t/array-operations-on-structures/1739020)
**Author:** [@BaBuuuuuu](https://forums.unrealengine.com/u/BaBuuuuuu)\ **Replies:** 12\ **Last updated:** [April 19, 2024, 6:31pm UTC](https://forums.unrealengine.com/t/array-operations-on-structures/1739020 "2024-04-19T18:31:19Z")
Good morning everyone. I have a problem in which I can not get it out: -Make some mines that generate resources, multiplied, by two float and that this multiplication is added in a float every second in an arrays of st… --- ## [Проблемы с игрой](https://forums.unrealengine.com/t/topic/1792509)
**Author:** [@PRbrkMr.deflako](https://forums.unrealengine.com/u/PRbrkMr.deflako)\ **Replies:** 0\ **Last updated:** [April 7, 2024, 2:52pm UTC](https://forums.unrealengine.com/t/topic/1792509 "2024-04-07T14:52:07Z")
я сделал меню, языки для игры, карту от первого лица с ландскейпом, добавил текстуры и так далее, так вот, я перезашёл в движок сохранив проект, захожу, запускаю симуляцию игры в движке, и у меня не пропадает меню, и дел… --- ## [Could not import .udatasmith file in UE 4.27](https://forums.unrealengine.com/t/could-not-import-udatasmith-file-in-ue-4-27/1545447)
**Author:** [@seeyouanteeius](https://forums.unrealengine.com/u/seeyouanteeius)\ **Replies:** 1\ **Last updated:** [January 9, 2024, 5:27pm UTC](https://forums.unrealengine.com/t/could-not-import-udatasmith-file-in-ue-4-27/1545447 "2024-01-09T17:27:42Z")
Hello. I tried to import .udatasmith model from 3ds max but I keep getting these errors: DatasmithImport: Error: Cannot find Static Mesh 57 for Static Mesh Actor DrawCall\_0256.StaticMeshComponent0. DatasmithImport: Err… --- ## [3ds max 21 does not open after installing datasmith](https://forums.unrealengine.com/t/3ds-max-21-does-not-open-after-installing-datasmith/1327111)
**Author:** [@demirto](https://forums.unrealengine.com/u/demirto)\ **Replies:** 2\ **Last updated:** [October 10, 2023, 4:55pm UTC](https://forums.unrealengine.com/t/3ds-max-21-does-not-open-after-installing-datasmith/1327111 "2023-10-10T16:55:59Z")
3ds max 21 does not opening after installing datasmith for UE 5.3 without any warning message. When I remove Datasmith from the computer, 3ds Max opens. I tried to remove 3ds Max and UE and reinstalled but anything chang… --- ## [Build target and cook variant mismatch?](https://forums.unrealengine.com/t/build-target-and-cook-variant-mismatch/728010)
**Author:** [@QinQ](https://forums.unrealengine.com/u/QinQ)\ **Replies:** 1\ **Last updated:** [September 21, 2023, 6:10pm UTC](https://forums.unrealengine.com/t/build-target-and-cook-variant-mismatch/728010 "2023-09-21T18:10:59Z")
I created a fresh version of Lyra project and built unreal 5.1 from source. When I open the project launcher and try to build LyraGame windows server and by the book, it says that there is a mismatch. How can I fix this … --- ## [UE5 FBX from Blender Import without error has no animation](https://forums.unrealengine.com/t/ue5-fbx-from-blender-import-without-error-has-no-animation/1246341)
**Author:** [@Randall\_Ericson](https://forums.unrealengine.com/u/Randall_Ericson)\ **Replies:** 55\ **Last updated:** [September 18, 2023, 8:07am UTC](https://forums.unrealengine.com/t/ue5-fbx-from-blender-import-without-error-has-no-animation/1246341 "2023-09-18T08:07:23Z")
I am trying to make a Free UE5 VR experience and I am at a total loss now. I have looked all over the internet and found no solutions that works for this particular problem. I am using Blender 3.4 and made an animation t… --- ## [Pixel Streaming Matchmaker Not Working](https://forums.unrealengine.com/t/pixel-streaming-matchmaker-not-working/1197729)
**Author:** [@Devilondetails](https://forums.unrealengine.com/u/Devilondetails)\ **Replies:** 4\ **Last updated:** [July 3, 2023, 5:41am UTC](https://forums.unrealengine.com/t/pixel-streaming-matchmaker-not-working/1197729 "2023-07-03T05:41:20Z")
I have created a pixel streaming application now I want to make it so that multiple stacks can be used on a single instance to connect each client to their specific game instance and enable multiplayer and I am using mat… --- ## [Darker render than what im actually see](https://forums.unrealengine.com/t/darker-render-than-what-im-actually-see/1185249)
**Author:** [@ranelhadedy1](https://forums.unrealengine.com/u/ranelhadedy1)\ **Replies:** 0\ **Last updated:** [June 1, 2023, 3:21am UTC](https://forums.unrealengine.com/t/darker-render-than-what-im-actually-see/1185249 "2023-06-01T03:21:37Z")
i’m facing this annoying problem of (( darker rendered output than what i’m actually seeing in my screen in (render queue and legacy even with hight number of (warm frams) )and i have tried to change the (exposure amoun… --- ## [foliage disappeared in UE5.1.1](https://forums.unrealengine.com/t/foliage-disappeared-in-ue5-1-1/1166192)
**Author:** [@Justin.Peifer](https://forums.unrealengine.com/u/Justin.Peifer)\ **Replies:** 0\ **Last updated:** [May 15, 2023, 7:23am UTC](https://forums.unrealengine.com/t/foliage-disappeared-in-ue5-1-1/1166192 "2023-05-15T07:23:04Z")
Hello! I was working in UE5.1.1 last friday and today (monday, 15th of May) the whole foliage disappeared. It disappeared also in the foliage mode. I have two levels in my UE project. In the first level the foliage is st… --- ## [UE5.2 Preview 2 Bridge doesn't load asset and connect to internet](https://forums.unrealengine.com/t/ue5-2-preview-2-bridge-doesnt-load-asset-and-connect-to-internet/1112144)
**Author:** [@Galislorer](https://forums.unrealengine.com/u/Galislorer)\ **Replies:** 0\ **Last updated:** [April 18, 2023, 2:31pm UTC](https://forums.unrealengine.com/t/ue5-2-preview-2-bridge-doesnt-load-asset-and-connect-to-internet/1112144 "2023-04-18T14:31:46Z")
Hi everyone Is anyone having these issues with the quixel bridge? I’ve already installed the 5.2 preview 2 version twice and the bridge doesn’t seem to be able to connect to the internet. The bridge works perfectly in t… [Next page](https://forums.unrealengine.com/tag/problems/2921.md?match_all_tags=true&page=1&tags%5B%5D=problems)