Unreal Engine Issues
Unreal Engine Issues
Filtering a Curve with Fourier Transform (FFT) with the Response set to Chebyshev crashes the editor
UE - Anim - Sequencer - Mar 19, 2021When creating a Curve and filtering the keys with a Fourier Transform, the engine crashes. The engine doesn't crash when the Bake, Euler, or Simplify options. It only crashes if there are a minimum ...
Crash on loading some MovementAnimSetPro Blendspaces
OLD - Anim - Dec 21, 2016Error message: Assertion failed: TrianglesMade==2 [Link Removed] [Line: 373] Source Context: 360 { 361 FTriangle NewTriangle(A->Vertices[1],A->Vertices[2], TestPt); 362 ...
Crash when Editing Text in Libraries Category Text field within Material Functions
UE - Rendering - Architecture - Materials - Jun 7, 2016When editing the 'Libraries Category Text' field within a Material function a crash occurs. Regression? Yes, this crash does not occur in the 4.11 release. I have attached an image for reference. ...
Crash when changing r.MaterialQualityLevel when FastGeo plugin enabled in cooked build
UE - World Creation - Worldbuilding Tools - Sep 5, 2025The engine crashes when the r.MaterialQualityLevel is changed in a cooked game that uses the FastGeo Streaming Plugin. The crash doesn't repro with the same steps in Editor, just in a cooked build. ...
Crash when Child Actor Component overlaps Parent static mesh inside of the blueprint editor
UE - Gameplay - Sep 21, 2015Crash when Child Actor Component, that is set to Destroy Other Actor on overlap, overlaps Parent static mesh inside of the blueprint editor Crash Reporter: [Link Removed] ...
Crash when element is added to a map variable with unhashable key
UE - Gameplay - Mar 21, 2017Crash when element is added to a map variable with unhashable key. An error is thrown on compile but an element can still be added under the Details panel of the variable. Crash Reporter: [Link Rem ...
Opening a DataTable that is set to a Struct that is using a Key variable will crash the editor
Tools - Nov 3, 2015Opening a DataTable that is set to a Struct that is using a Key variable will crash the editor User Description: I'm getting this crash when using Key variable in DataTable. I was able to repro i ...
~FStaticMesh() can crash with race condition
UE - Graphics Features - Mar 21, 2017UDN user reported frequent crashes in FStaticMesh::~FStaticMesh() on DrawListLinks[i]->Remove(false); Crash went away after adding critical sections to FStaticMesh::LinkDrawList(), FStaticMesh::Unl ...
Project debug symbols are no longer included in crash reporter callstacks.
UE - Foundation - Core - Jun 15, 2015Project debug symbols are not appearing in crash reports in 4.8. In 4.7.6, these symbols would be included in the crash reports, but in 4.8 these lines have no information other than the project nam ...
Crash when opening or editing a DataTable with a Row Structure that contains a Curve
UE - Editor - Nov 9, 2023If a DataTable Asset is created with a Row Structure that contains a member variable of type Curve, the Editor will crash when attempting to open it while it has no rows. It will also crash when edi ...