Unreal Engine Issues

PhysX crash when SetMaterial is called

When provided sample project is run in PIE, crash occurs after call to SetMaterial() is made in code. Downloadable Project: [Link Removed] CrashReporter: [Link Removed] ...

Functional Test framework crashes adding delegate instance when multiplayer PIE enabled

The Functional Test framework crashes when adding a delegate instance if multiplayer PIE is enabled. The crash occurs at the check code in the block below from ..\Engine\Source\Runtime\Core\Public\D ...

Datasmith error when attempting to package - Error: Ensure condition failed: It->Value File:Engine\Plugins\Enterprise\DatasmithContent\Source\DatasmithContent\Private\DatasmithAssetUserData.cpp

Copy, Paste and Hover a Material Layer Blend Node causes Crash

In the Material Editor, if all Live Previews are turned off, copying and pasting a Material Layer Blend Node will crash when the tool tip is being processed. Also Reproduced in Main Promotable-CL-2 ...

Opening a widget blueprint on Linux causes editor to crash

The editor crashes when attempting to open a widget blueprint. ...

Using the output from FindAllPakFiles to call StreamableManager::RequestAsyncLoad causes a crash

A user has reported a problem where the directory that is output from FindAllPakFiles is not compatible with the StreamableManager::RequestAsyncLoad function and will cause a crash if using the two ...

UE4Editor does not start when there are no audio devices available

UE4Editor does not open when there are no audio input or output devices available. The editor hangs at 83% after it initializes the AudioMixer. This issue looks like it was caused by CL 4396954. Et ...

Linux crash when Exporting content

When the ExportAll window is opened, changing the file type filter and attempting to edit the chosen file field causes the editor to crash. ...

Attempting to export sequencer camera causes editor to crash on Linux

Trying to export a sequence camera on Linux causes the editor to crash. This does not occur on Windows. EDIT: Crash seems to occur when focus leaves the FileName field. ...

Project breaks if Online Subsystem plugin is disabled

Disabling Online Subsystem prevents the project from loading. On Windows, this produces an error shown in attached screenshot. On Linux, this causes a crash with the attached callstack on project ...