Unreal Engine Issues
Unreal Engine Issues
Access Violation in delegatesignatureimpl.inl after HotReload
UE - Foundation - Core - Jan 27, 2017This is the third different callstack in an attempt to repro a HotReload crash I am experiencing. The other two are:[Link Removed]: Nullptr Ensure and crash after HotReloading[Link Removed]: Assert ...
Editor Utility Nested in Expandable Area Causes Editor Crash
UE - Editor - UI Systems - Dec 15, 2022A 'user-created' widget in the body of an Expandable Area of an Editor Utility Widget causes a crash, after selecting 'Run Editor Utility Widget'. ...
Crash setting actor rotation via details panel in VR editor
UE - Editor - Workflow Systems - Feb 3, 2017Crash attempting to input value for Rot Y in a floating details panel. Found on //UE4/Release-4.15 CL-3283184. Reproduces in Binary and P4 versions of the editor. Reproduces in //UE4/Main CL-3283 ...
Syncing Font Assets through Subversion can cause a crash
Tools - Jun 5, 2017A licensee is having issues syncing their fonts folder from within the editor using Subversion. This issue only occurs with their Fonts folder; with the callstack they supplied, this leads me to bel ...
Sequencer Playlist - Triggering a playlist will crash every other editor on a Multi-user session
UE - Virtual Production - Tools - Sequence Playlist - Nov 24, 2022[Link Removed] ...
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. ...
Walking into some destructibles crashes the editor
UE - Simulation - Physics - Destruction - Aug 20, 2015Submitted by a licensee on UDN. I verified it and have attached the test level that he provided. In the test map. some boxes fall and break. Walking straight into the boxes causes the editor to cra ...
Packaged ThirdPerson template with "start in vr" enabled packaged and launched with "-nohmd" crashes
UE - Platform - XR - Mar 31, 2021The callstack is not XR-specific, it's just the engine trying to secure the audio device on startup, windows failing to return one, and the app not being able to continue safely. The crash does not ...
Editor Crash after Compiling Primary DataAsset
UE - Gameplay - Blueprint Compiler - Feb 16, 2023After compiling a data asset blueprint, attempting to open the parent data asset will crash the editor. From licensee: This is because in FAssetEditorToolkit::InitAssetEditor() the objects in Objec ...
Crash when adding a streaming level to the world through Python
UE - World Creation - Worldbuilding Tools - World Composition - Aug 3, 2021When using the Python plugin to add an existing level as a streaming level, the editor crashes. It seems that this happens regardless of what level is added or what the contents of that level are. A ...