# 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:** 1\ **Showing post:** 7
**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 --- _[View the full topic](https://forums.unrealengine.com/t/assertion-failed-texture-levelindex-index-none-fix/723490)._