Unreal Engine 4 Keeps Crashing

Development Programming & Scripting Blueprint
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1

Whenever I am using Unreal Engine 4.14 and 4.15 on a Mac computer at my college, and go into the blueprint editor, it will glitch out and crash most of the time. The message below is from the latest crash. Please help!

MachineId:2E25393599467AE82822AFB332FCECE8
EpicAccountId:d4e297868bbc4e35895a240cd793786d

 SEGV_MAPERR at 0x3

FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10c7dadab (filename not found) [in UE4Editor-Core.dylib]
FOutputDeviceMacError::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x10c993378 (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::Logf(wchar_t const*, ...) Address = 0x10ca70d17 (filename not found) [in UE4Editor-Core.dylib]
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...) Address = 0x10c9efb7e (filename not found) [in UE4Editor-Core.dylib]
ReportMetalCommandBufferFailure(id, wchar_t const*) Address = 0x14291588f (filename not found) [in UE4Editor-MetalRHI.dylib]
MetalCommandBufferFailureInternal(id) Address = 0x14297a01c (filename not found) [in UE4Editor-MetalRHI.dylib]
HandleNVIDIAMetalCommandBufferError(id) Address = 0x1429143d5 (filename not found) [in UE4Editor-MetalRHI.dylib]
-[_MTLCommandBuffer didComplete:error:] Address = 0x7fff9e82f5c8 (filename not found) [in Metal]
-[MTLIOAccelCommandBuffer didComplete:error:] Address = 0x7fff9e807ec1 (filename not found) [in Metal]
-[_MTLCommandQueue commandBufferDidComplete:timestamp:error:] Address = 0x7fff9e833135 (filename not found) [in Metal]
ioAccelCommandQueueBlockFenceCallback Address = 0x7fff91a821ee (filename not found) [in IOAccelerator]
IODispatchCalloutFromCFMessage Address = 0x7fff9b955646 (filename not found) [in IOKit]
_IODispatchCalloutWithDispatch Address = 0x7fff9b9556c5 (filename not found) [in IOKit]
dispatch_mig_server Address = 0x7fff8bc86a4b (filename not found) [in libdispatch.dylib]
_dispatch_client_callout Address = 0x7fff8bc7240b (filename not found) [in libdispatch.dylib]
_dispatch_source_latch_and_call Address = 0x7fff8bc82675 (filename not found) [in libdispatch.dylib]
_dispatch_source_invoke Address = 0x7fff8bc76a83 (filename not found) [in libdispatch.dylib]
_dispatch_queue_drain Address = 0x7fff8bc77200 (filename not found) [in libdispatch.dylib]
_dispatch_queue_invoke Address = 0x7fff8bc7d707 (filename not found) [in libdispatch.dylib]
_dispatch_root_queue_drain Address = 0x7fff8bc75d53 (filename not found) [in libdispatch.dylib]
_dispatch_worker_thread3 Address = 0x7fff8bc75b00 (filename not found) [in libdispatch.dylib]
_pthread_wqthread Address = 0x7fff8aa534de (filename not found) [in libsystem_pthread.dylib]
start_wqthread Address = 0x7fff8aa51341 (filename not found) [in libsystem_pthread.dylib]
2

Hey -

This is a known issue with Nvidia drivers. You can find additional information about this here: Unreal Engine Issues and Bug Tracker (UE-41095) .

Cheers

3

To ,

My games are crashing due to any changes pertaining to the Blueprint Editor, and not by changing the size of the game window. At the same time, for a side scroller game I’m making, whenever I press play, all I get is a black screen. I do believe the solution provided is for a different one, not pertaining to my games. Please advise for how I can fix this, if it is fixable at all.

Signed,

Marshal Houck

4

The reproduction case may be different however the crash itself is the same in both instances. This is an issue with Metal support on Mac. Using 4.13 instead should work around this crash. As for the black screen issue, it would be best to create a new post for that to track each issue separately.