# Why is Unreal Engine 4.12.5 keep crashing **URL:** \ **Category:** Blueprint\ **Tags:** unreal-engine, crash-report, UE4, Blueprint, question\ **Created:** [July 18, 2016, 9:35am UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346 "2016-07-18T09:35:46Z")\ **Posts on this page:** 14\ **Page:** 1
**Author:** ![anonymous\_user\_78bd3cc01](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_78bd3cc01](https://forums.unrealengine.com/u/anonymous_user_78bd3cc01)\ **Post date:** [July 18, 2016, 9:35am UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/1 "2016-07-18T09:35:46Z")
I recently downloaded Unreal Engine 4.12.5 and I couldn’t even get started on a project because it will just crash before I even start a template. MachineId:A7F548874F22AF9E162A648182A1FB41 EpicAccountId:1883f9e0fadc4448bbb25d5e6e7c7481 MachineId:A7F548874F22AF9E162A648182A1FB41 EpicAccountId:1883f9e0fadc4448bbb25d5e6e7c7481 Fatal error: [File:D:\Build++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Util.cpp] [Line: 227] SwapChain-\>ResizeBuffers(1,SizeX,SizeY,GetRenderTargetFormat(PixelFormat),DXGI\_SWAP\_CHAIN\_FLAG\_ALLOW\_MODE\_SWITCH) failed at D:\Build++UE4+Release-4.12+Compile\Sync\Engine\Source\Runtime\Windows\D3D11RHI\Private\D3D11Viewport.cpp:215 with error DXGI\_ERROR\_INVALID\_CALL UE4Editor\_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\core\private\misc\outputdevice.cpp:440] UE4Editor\_D3D11RHI!VerifyD3D11Result() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11util.cpp:227] UE4Editor\_D3D11RHI!FD3D11Viewport::Resize() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\windows\d3d11rhi\private\d3d11viewport.cpp:217] UE4Editor\_SlateRHIRenderer!FSlateRHIRenderer::ConditionalResizeViewport() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:326] UE4Editor\_SlateRHIRenderer!FSlateRHIRenderer::DrawWindows\_Private() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\slaterhirenderer\private\slaterhirenderer.cpp:631] UE4Editor\_Slate!FSlateApplication::PrivateDrawWindows() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1258] UE4Editor\_Slate!FSlateApplication::DrawWindows() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:969] UE4Editor\_Slate!FSlateApplication::TickApplication() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1558] UE4Editor\_Slate!FSlateApplication::Tick() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\slate\private\framework\application\slateapplication.cpp:1350] UE4Editor!FEngineLoop::Tick() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:2810] UE4Editor!GuardedMain() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\launch.cpp:148] UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:126] UE4Editor!WinMain() [d:\build++ue4+release-4.12+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:200] UE4Editor!\_\_scrt\_common\_main\_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe\_common.inl:264] kernel32 ntdll These are the crash reports, if someone knows how to fix this unnecessary issue I would be great full if you guys would let me know. ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [July 18, 2016, 3:02pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/2 "2016-07-18T15:02:35Z")
Hello, This is a known issue, UE-30488, that is being investigated by our developers. Could you please provide your dxdiag? Does this occur in 4.11.2 as well? ---
**Author:** ![anonymous\_user\_78bd3cc01](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_78bd3cc01](https://forums.unrealengine.com/u/anonymous_user_78bd3cc01)\ **Post date:** [July 19, 2016, 10:06am UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/3 "2016-07-19T10:06:36Z")
I don’t know what you mean by a dxdiag, and I don’t know if this occurs in 4.11.2 and I don’t know how to check ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [July 19, 2016, 12:33pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/4 "2016-07-19T12:33:21Z")
You would have to download 4.11.2, and open up the editor as you do to get the crash in 4.12.5. Here’s a post that details how to grab your dxdiag: [http://wizards.custhelp.com/app/answers/detail/a\_id/1271](http://wizards.custhelp.com/app/answers/detail/a_id/1271) ---
**Author:** ![anonymous\_user\_1f4aabf0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1f4aabf0](https://forums.unrealengine.com/u/anonymous_user_1f4aabf0)\ **Post date:** [July 26, 2016, 1:30pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/5 "2016-07-26T13:30:35Z")
it happens in each version ever since 4.11 came out, even then i wnt back to earlier ones and still had same issue well compiling or rebuild lighting on those earlier projects… seems to start on fresh copy but not like there is anything to compile there… i even went and got my self new graphic card but yeah no luck, same issue… shuts my pc right down… i been using unreal since it launched and never had issues into 4.11… i got 8 gb rams and 2 gb graphic card… it makes cpu max out at 100% and then shortly after Poof, off it goes, wich i understand, saving itself from burning out my cpu… but cause is unknown to me… ---
**Author:** ![anonymous\_user\_1f4aabf0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1f4aabf0](https://forums.unrealengine.com/u/anonymous_user_1f4aabf0)\ **Post date:** [July 26, 2016, 1:43pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/6 "2016-07-26T13:43:04Z")
if Dxdiag is needed, i can post that if you wish… anything to help the issue… (miss working on my project) ---
**Author:** ![CriErr](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@CriErr](https://forums.unrealengine.com/u/CriErr)\ **Post date:** [July 26, 2016, 1:47pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/7 "2016-07-26T13:47:08Z")
Mb just stick to 4.11 for now? ---
**Author:** ![anonymous\_user\_1f4aabf0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1f4aabf0](https://forums.unrealengine.com/u/anonymous_user_1f4aabf0)\ **Post date:** [July 26, 2016, 1:55pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/8 "2016-07-26T13:55:26Z")
it happens in each version since the release of 4.1,1 wich includes 4.11 and any before that or after… ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [July 26, 2016, 1:58pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/9 "2016-07-26T13:58:49Z")
The developers are still investigating this issue, which appears to occur in 4.11 and 4.12 versions. There is currently no known workaround for this crash. However, if you are able to determine a set of consistent repro steps for the issue, please provide them so we can add them to the report. Thanks! ---
**Author:** ![anonymous\_user\_1f4aabf0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1f4aabf0](https://forums.unrealengine.com/u/anonymous_user_1f4aabf0)\ **Post date:** [July 26, 2016, 2:24pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/10 "2016-07-26T14:24:40Z")
Yeah it’s consistent, after version is launched(any version since release of 4.11), during the compiling process on a project of (1,600 compiling) it reaches about 1000 left and then it crashes the pc. at first it only happen during the lightng being rebuilt, but now it’s during the basic compiling soon as UE4 project is launched… (very small Map truly, i would hate to see it on one of my bigger maps, wich i can not even try considering it’s my basic map that it accures on(loading screen)… here is my dxdiag and ty, hope you can figure it out… if it is my pc i would love to know, but it seems to be more then just my issue, considering others have the same issue…Something that happen from 4.10 to 4.11 that seem to c arry over to all version afterwards… link text ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [July 26, 2016, 3:00pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/11 "2016-07-26T15:00:01Z")
Thank you for the additional information. I’ll post back here with updates on this issue as they become available. ---
**Author:** ![anonymous\_user\_1f4aabf0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1f4aabf0](https://forums.unrealengine.com/u/anonymous_user_1f4aabf0)\ **Post date:** [July 26, 2016, 4:58pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/12 "2016-07-26T16:58:06Z")
well i have come to conclusion that it’s my Pc and just a coincidence that it accord during the process of going from 4.10 to 4.11, considering the issue has carried over to other game software, cpu hits 100% and shortly after shuts down… i’ll be back if i get another pc that can handle it… this is how far i did get with my project tatical/rpg/3rd person view, before the problem came into play… (oh and thank you anyways for looking into it, i do not want you wasting your time on this issue when it seems to be mine, when you can be helping others with theres) good luck, love the engine… few screenshots of where i was when it happen…(one person team) not counting my extra work in blender… ![100183-highresscreenshot00000+(2).jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/3/a/1/3a1a252d53da837dfecdf96ec400fb7070df0ced.jpeg) Well it seems i can only put one up here without going over 5.2 mb… i would share the others if i knew where to do so… take care ---
**Author:** ![anonymous\_user\_1f4aabf0](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@anonymous\_user\_1f4aabf0](https://forums.unrealengine.com/u/anonymous_user_1f4aabf0)\ **Post date:** [July 26, 2016, 5:06pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/13 "2016-07-26T17:06:42Z")
can you point me in the right direction to share these, if not i understand that this section is not for this… ![100184-highresscreenshot00001.jpg](https://d3kjluh73b9h9o.cloudfront.net/original/4X/b/b/2/bb2b7819412fe44c95078adec45ac2b06e116494.jpeg) ---
**Author:** ![Sean\_Flint](https://d3kjluh73b9h9o.cloudfront.net/original/4X/2/8/5/28502927f1d97ba1051b3b47ccfe17233bf41ef0.png) [@Sean\_Flint](https://forums.unrealengine.com/u/Sean_Flint)\ **Post date:** [July 26, 2016, 5:10pm UTC](https://forums.unrealengine.com/t/why-is-unreal-engine-4-12-5-keep-crashing/364346/14 "2016-07-26T17:10:22Z")
This post is strictly for information regarding the above crash, which has been entered. If you’d like to share screenshots of your game, please share them on [https://forums.unrealengine.com/forumdisplay.php?11-Work-in-Progress](https://forums.unrealengine.com/forumdisplay.php?11-Work-in-Progress) Thanks!