Unreal Engine Issues

C++ Projects Crash in Mac OS 10.11 El Capitan when No Audio Device is Present

This issue has been reported by two different users with very similar circumstances: Both report the editor freezing when trying to compile UE4.10 C++ Projects running Mac OSX 10.11.1 if no audio i ...

Crash when using UShaderCodeLibraryToolsCommandlet in 4.25

Crash on paste of subcategory in the details panel

Deleting a material layer from a stack, re-linking the layers, then deleting that layer again crashes the editor

The important step here is to unlink the middle layer after first relinking everything. ...

Crash when using a specific Component Mask with Material

This problem seems to stop at Check in HLSLMaterialTranslator.h. If the same value is entered in MCT_Float and MCT_Float4, it branches to True with IsIdentical, but it seems that a problem has occur ...

Editor crashes if you hold shift after dragging a marquee selection on anim sequence notifies then select notifies using ctrl

Looks like this all depends on pressing shift after creating a marquee ...

Fbx importer crash when reordering material array

Its possible to have a fbx file which as unused material in the fbx node. The reorder material function is not handling this case. ...

Proejcts with vr.InstancedStereo=true crash on Mac

Sounds like neither Multiviewport nor View Instancing (MMV) is not supported on Mac atm, and the logic in StereoAspects asserts. See attached log from a partner. ...

Editor crashes when actors using child actor component are loaded while Static mesh actor filter is enabled in the outliner

Reproduced 3/3 times. Unclear whether this is a regression as filter GUI is new in 5.1 for Outliner. ...

Blueprint - Crash when a function takes an event as a parameter

Looks like maybe we aren't replacing the source delegate function (SignatureFunction) reference on the UDelegateProperty after recompiling the class - the function's owner name has the TRASHCLASS pr ...