Unreal Engine Issues

Crash on adding elements to a TMap property

Adding elements to a TMap<int32, int32> causes the editor to crash if the TMap has a default value associated with it. Tested in 4.22 (CL - 4753647), 4.23 (CL - 7445012), 4.24 (CL - 7605614) ...

HandleKismetEvent (console cmd 'ke'): GT-ALT deadlock when user function flushes async loading

Context In builds with the in-game console enabled, users can use the ‘ke’ command to execute UFUNCTIONS on any object:ke * MyFunc // run MyFunc() on ANY UObject with a ufunction with that name ke ...

Creating a new C++ class derived from the UAbiltyTask from the Gameplay Ability System plugin fails to compile

This is not a regression Tested in //UE5/Release-5.0 CL20979098 Creating a new C++ class derived from the Abilty Task from the Gameplay Ability System plugin fails to compile. From the Live Coding ...

tvOS/IOS: Fails to Build with dSYM Options Enabled Due to DsymExporter Erroring Out

When attempting to package for tvOS or iOS with the generate dSYM options enabled, numerous instances of the following errors occur:[2019.01.21-20.53.35:739][138]UATHelper: Packaging (tvOS): [2019 ...

Crash when deleting mesh instances of a HISM component

When trying to delete an existing (and saved) mesh instance from a Hierarchical Instanced Static Mesh component the Editor crashes due to a failed assertion, however clearing all instances does not ...

Crash when editing category name in the emitter summary

[CRASH]SIGSEGV: invalid attempt to access memory at address 0x0

Callstack: <CALLSTACK START> FTaskThread::ProcessTasksUntilQuit(int) Address = 0x1091943e5 (filename not found) [in UE4Editor-Core.dylib] RenderingThreadMain(FEvent*) Address = 0x10de37e4b (filena ...

Constant Crashes on OS X 10.10.1

User (Omri) on Mac running OS X 10.10.1. on MacBook Pro (17-inch, Early 2009 Experiencing Crash. Cannot reproduce. Crash Reporter: N/A Callstack: MachineId:1E07B9CE2F4554A7C3F421A9DD97AFB5 EpicAc ...

Crash freeing FClothingComboInfo array when importing LOD Level 8 of Skeletal Mesh

This does not occur in 4.17.2 at CL 3658906 ...

Crash when using EditConditionHides with a struct in an array

A crash can occur in FStructurePropertyNode::GetValuePtrOfInstance when using EditConditionHides with arrays of structs. When deleting an element from the array, ParentBaseAddress will be null. ...