Unreal Engine Issues
Unreal Engine Issues
Cannot generate a callstack from the user's dll
UE - Foundation - Core - May 26, 2015The dumplogs and any other logs requested from this user are listed within this AnswerHub post. I do have the DMP logs currently on my PC if you're unable to download them, they're 1.9GB Jarek S. h ...
Materials with Subsurface Profile not affected by Opacity value
UE - Graphics Features - Oct 24, 2017A material with Shading Model set to Subsurface Profile is no longer affected by Opacity value in 4.17, 4.18, and 4.19 (Main) but was previously working as intended in 4.16. This is a regression. ...
Recast rcScopedDelete<T>::resizeGrow copies too many elements
UE - AI - Navigation - Nov 5, 2024Context The Recast module has a helper struct rcScopedDelete for allocating, resizing and automatically freeing the allocated memory when the struct goes out of scope. Its allocation functions can ...
Crash occurs loading a sublevel containing landscape with ray tracing enabled
UE - LD & Modeling - Terrain - Landscape - May 13, 2020In raytracing enabled, When loading a sublevel containing landscape with LoadStreamLevel function following error is shown. Assertion failed: Pair != nullptr [Link Removed] [Line: 584] Licensee re ...
Crash when using CastChecked<>(nullptr, ECastCheckedType::NullAllowed) in configurations where checks are disabled
UE - CoreTech - Jun 19, 2025When using CastChecked<>(), the second parameter can be passed as ECastCheckedType::NullAllowed to make the check succeed when the input is nullptr. However, in UE 5.5 up to the latest engine versio ...
Enabling Shader compilation via XGE for 4.18 Editor downloaded from Launcher doesn't work, prevents shaders from compiling at all, editor from loading in some cases
UE - Foundation - Build - Rocket (Installed Engine) - Nov 9, 2017If you enable Shader compilation via XGE by setting r.XGEShaderCompile = 1 in ConsoleVariables.ini in 4.18 Editor downloaded from Launcher, it prevents shaders from compiling at all, and as a result ...
Incremental Cooks: Add dependencies on files loaded during Load/Save of the package
UE - Foundation - Data Pipeline - Cooker - Oct 19, 2022Iterative and Incremental cooking are supposed to recook packages when their "inputs" change. Most of the time inputs are the package file itself and the other package files on which it has dependen ...
Translucent Materials and Atmospheric Fog Appear Black or Pink on Mac
UE - Graphics Features - Jan 3, 2018I tested this on a Mac Pro in UE 4.15, 4.16, 4.17, and 4.18. As a possible workaround for the fog issue, I've discovered that setting Atmospheric Fog > Lighting > Disable Ground Scatter to "True" wi ...
Loading instanced static mesh causes memory leak in packaged game
UE - World Creation - Worldbuilding Tools - Foliage - Mar 3, 2021The leaking variable is UInstancedStaticMeshComponent::InstanceDataBuffers. The memory block is passed to InitPerInstanceRenderData() via InstanceDataBuffers.Release(). But the function doesn't mana ...
Large Memory Allocations When Adding a Landscape_WaterBrushManager
UE - Graphics Tools - Terrain - Mar 17, 2025When a "Water Body River" is added to a Scene with a Landscape, eleven Render Targets are allocated for the water rendering. These Render Targets are sized according to the resolution of the Landsca ...