Unreal Engine Issues
Unreal Engine Issues
[CrashReport] UE4Editor_Engine!LoadSpecialMaterial() [unrealengine.cpp:1523]
UE - Graphics Features - Nov 10, 2017This is a longstanding crash that has occurred for more than 200 users since at least 4.13. Based on user descriptions this appears to permanently corrupt a project. User DescriptionsI just turned ...
[CrashReport] DerivedDataCache!TArray<unsigned char,FDefaultAllocator>::ResizeForCopy
UE - Graphics Features - Aug 29, 2017This is an infrequent crash coming out of the 4.17 release. Users have not provided any descriptions of their actions when the crash occurred. It seems to be a different issue, but the callstack sh ...
'Autosized' SWindow with `.AutoHeight()` elements has unwanted white space
UE - AI Workflows - UI Systems - Slate - Oct 12, 2022Heavily discussed and diagnosed in this thread: [Link Removed] [Link Removed] narrowed down the cause: It's the calculation inside the SWindow that is wrong, sometime. It adds SWindowDefs::Default ...
MATERIAL_SHADINGMODEL_TOON macro is not propagated to the substrate tool BSDF material on a DDC hit
UE - Rendering - Features - Shading Models - Jul 27, 2026On a DDC hit, the SubstrateMaterialBsdfFeatures variable restored into MaterialCompilationOutput is not copied into SubstrateTranslatorData.SubstrateMaterialBsdfFeatures, which is referenced by the ...
Collision outcome is different between PIE and Mobile Preview/Packaged Project.
UE - Simulation - Physics - Mar 25, 2015When playing the user's project in editor vs Packaged, there has been different results for the enemies collision. When playing in PIE, you are able to fly through the enemies with no issues. When p ...
Adding OnClicked to SButton in Editor Mode plugin crashes editor when accessing the plugin
UE - Foundation - Cpp Tools - Plugin System - Mar 16, 2016If a new editor plugin has a button added with OnClicked functionality, the editor will crash immediately when accessing the plugin. Removing the OnClicked portion of code allows the plugin to be a ...
BinaryConfig cannot be created in packaging if there is a space in the file path name.
UE - Core - Cpp Tools - Automation Tool Framework - Jun 13, 2022Error log is output when including spaces when packaging binary configurations. The following log contains the string "Test Test" with spaces in the file path. ERROR: Failed to copy D:\Projects\Te ...
Crash in Middle of PIE with Level sequences and MRQ running
UE - Runtime - Animation - Mar 6, 2023Repro Rate: 5/5 Tested this a few times and the crash seems to come in at different intervals, some had the prestreaming almost finished, then would crash. Working on a video to show crash to add ...
[CrashReport] UE4Editor_Engine!FNetGUIDCache::GetObjectFromNetGUID() [packagemapclient.cpp:1876]
UE - Networking - Jul 16, 2015I loaded up a two player game in the 'play in editor'. Upon clicking into the client, the game crashed. Clicking into the server did not cause it to crash.I'm pretty sure this happened because I check ...
Unexpected behavior with Broken Constraint and Physics Blend Weight
OLD - Anim - Jan 13, 2017Looks like the position of the bone according to the animation is still being accounted for somehow, because the collision seems fine (when using pxvis collision). ...