# Assertion failed: Texture-\>LevelIndex != INDEX\_NONE Fix **URL:** \ **Category:** Feedback & Requests\ **Tags:** unreal-engine\ **Created:** [December 7, 2022, 5:19pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490 "2022-12-07T17:19:39Z")\ **Posts on this page:** 13\ **Page:** 1
**Author:** ![AdrianTabacaru](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@AdrianTabacaru](https://forums.unrealengine.com/u/AdrianTabacaru)\ **Post date:** [December 7, 2022, 5:19pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/1 "2022-12-07T17:19:39Z")
Assertion failed: Texture-\>LevelIndex != INDEX\_NONE [File:D:\build++UE5\Sync\Engine\Source\Runtime\Engine\Private\Streaming\TextureStreamingBuild.cpp] [Line: 662] Hello, in case someone gets this error, I have found that switching from DirectX 11 to DirectX 12 fixes it. ---
**Author:** ![Aleksey\_Tsarev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Aleksey\_Tsarev](https://forums.unrealengine.com/u/Aleksey_Tsarev)\ **Post date:** [January 26, 2023, 11:53am UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/2 "2023-01-26T11:53:20Z")
Thx for the tip. Faced the same issue. “Build texture streaming” solved this problem as well. ---
**Author:** ![xermao](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@xermao](https://forums.unrealengine.com/u/xermao)\ **Post date:** [April 29, 2023, 6:41am UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/4 "2023-04-29T06:41:54Z")
Thank you very much, this method has solved my problem! ---
**Author:** ![imch123](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@imch123](https://forums.unrealengine.com/u/imch123)\ **Post date:** [July 25, 2023, 9:51pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/5 "2023-07-25T21:51:07Z")
Hi AdrianTabacaru. I have got the same error message while launching the game. I have already DirectX12 installed. Any other solution please ? ---
**Author:** ![xadamxful](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@xadamxful](https://forums.unrealengine.com/u/xadamxful)\ **Post date:** [August 11, 2023, 1:42pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/6 "2023-08-11T13:42:08Z")
What do you mean by “build texture streaming”? I have “texture streaming” enabled in project settings. Ah ok I see it now under build drop down. ---
**Author:** ![Frakatchoo](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/frakatchoo/32/1060026_2.png) [@Frakatchoo](https://forums.unrealengine.com/u/Frakatchoo)\ **Post date:** [December 24, 2023, 12:46pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/7 "2023-12-24T12:46:05Z")
Exactly the same problem. I tested several things: DirectX12 + Texture Streaming, Compile an launching the game = **Crash** DirectX12 + Untick Texture Streaming, Compile an launching the game = **Works** DirectX11 + Texture Streaming, Compile an launching the game = **Works** Build an old backup, with DirectX12 and Texture Streaming, it works. So there is something related to texture in my level. The solution is to resolving conflicting material GUIDs, and there is a free plugin for that! > **[GUID Fixer in Code Plugins - UE Marketplace](https://www.unrealengine.com/marketplace/en-US/product/guid-fixer)** > > Fixes issues with empty and conflicting material and texture GUIDs ---
**Author:** ![diego.ba7op](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@diego.ba7op](https://forums.unrealengine.com/u/diego.ba7op)\ **Post date:** [March 27, 2024, 10:26pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/8 "2024-03-27T22:26:58Z")
Hey! Same issue here. Did you managed to fix it / workaround it? ---
**Author:** ![diego.ba7op](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@diego.ba7op](https://forums.unrealengine.com/u/diego.ba7op)\ **Post date:** [March 28, 2024, 12:48pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/9 "2024-03-28T12:48:21Z")
Found it! Another possible cause for this issue is a bug, that I think is fixed in newer versions (I’m on 5.1.1) that if you have a material function (or function instance) connected to a node and you replace that connection with another material function instance, this happens. I found the issue report and it says it’s fixed, but I lost the link, sorry. The workaround is just to disconnect the material function instance, save, maybe recoonect with something that’s not a function, or leave disconnected. Reopen, and then connect the new material function. If you can’t open a material because of this issue, you can simply duplicate the suspected material function / instances. Delete them, and reopen material. ---
**Author:** ![SBBBurney](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@SBBBurney](https://forums.unrealengine.com/u/SBBBurney)\ **Post date:** [April 28, 2024, 3:30pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/10 "2024-04-28T15:30:11Z")
Happens in 5.4. Incredibly bad experience so far going from 5.3.2 to 5.4… Crash every 5 minutes, hardly can get anything done. ☹ EDIT: 5.4.1 fixed this for me! ---
**Author:** ![Aleksey\_Tsarev](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Aleksey\_Tsarev](https://forums.unrealengine.com/u/Aleksey_Tsarev)\ **Post date:** [May 7, 2024, 2:00pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/11 "2024-05-07T14:00:17Z")
Pardon, I haven’t been here for a while and even forgot I droped a comment here 🙂 Glad you found it on your own ---
**Author:** ![Alex\_Szaloki](https://d1ap1mz92jnks1.cloudfront.net/user_avatar/forums.unrealengine.com/alex_szaloki/32/1000866_2.png) [@Alex\_Szaloki](https://forums.unrealengine.com/u/Alex_Szaloki)\ **Post date:** [November 30, 2024, 8:51pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/12 "2024-11-30T20:51:39Z")
This problem seems to be back with vengeance in 5.5. LOTS of crashes. Anybody still getting this? ---
**Author:** ![RotemShi](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@RotemShi](https://forums.unrealengine.com/u/RotemShi)\ **Post date:** [December 31, 2024, 9:33pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/13 "2024-12-31T21:33:27Z")
Yes, getting it today in 5.5.1 on a packaged project. ---
**Author:** ![Fruit.M3.O](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Fruit.M3.O](https://forums.unrealengine.com/u/Fruit.M3.O)\ **Post date:** [May 27, 2025, 2:45pm UTC](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490/14 "2025-05-27T14:45:33Z")
yep… 5.5.4 and getting instant crashes when viewing materials. “Fixed”? ya, don’t think so.