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Project Crashing On Startup

My project was working fine until all of a sudden the animations started glitching and ue4 crashed. Now every time I attempt to open the game it crashes... I read through the crash logs and this it what I found:


LogWindows: Failed to load 'aqProf.dll' (GetLastError=126)

LogWindows: File 'aqProf.dll' does not exist

LogWindows: Failed to load 'VSPerf140.dll' (GetLastError=126)

LogWindows: File 'VSPerf140.dll' does not exist

LogWindows: Failed to load 'VtuneApi.dll' (GetLastError=126)

LogWindows: File 'VtuneApi.dll' does not exist

LogWindows: Failed to load 'VtuneApi32e.dll' (GetLastError=126)

LogWindows: File 'VtuneApi32e.dll' does not exist

Product Version: UE 4.17
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asked Nov 12 '17 at 04:33 AM in Using UE4

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Penton
6 1 6 5

avatar image Penton Nov 12 '17 at 04:40 AM

And I would like to mention that I can launch the game to play, and I can launch other projects to edit. Only when I open the project to edit will ue4 crash.

avatar image Penton Nov 12 '17 at 08:22 AM

hmm this is weird, all of my crash reports from when the game was working have this too.

avatar image Penton Nov 12 '17 at 08:22 AM

I don't really know what they error is then.

avatar image Penton Nov 12 '17 at 08:23 AM

this dosent work on other computers.

avatar image Penton Nov 12 '17 at 08:24 AM

sry, the project wont launch on any computers.

avatar image Prime-F Dec 26 '17 at 01:24 PM

Same for me. Both folder have been deleted, but i steel have the crash when i launch Fortnite. Is there another way to correct it?

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15 answers: sort voted first

I finally fixed this issue, I just had to delete my saved and intermediate folders.

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answered Nov 12 '17 at 08:28 AM

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Penton
6 1 6 5

avatar image HitEmUp Apr 02 '18 at 12:36 AM

nope, this don't help at all. Maybe a epic bug?

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I am having the same problem ! Please help me to fix it

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answered Dec 18 '17 at 01:19 PM

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Sniper_Dead_Shot
16 1 2

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I think I FINALLY found out why it's crashing. I was getting the exact same .dll errors as you all were. It happened over and over again. I ended up having to rollback my project 4 of 5 different times.

Answer: The problem was with my code. For example one time I had a TArray, in which I was trying call a function on an index and it was a nullptr. When I compiled it crashed with those errors. At the time I was unaware of my logic error. I kept deleting the binaries/saved/intermediate files, but the project would still crash when loading with those .dll errors. I ended up fixing the code saving the .cpp files and .h files and it worked. I wasn't 100% sure this was the answer, but the crash happened to me again...

I was calling PostInitProperties on a derived class I created, but I wasn't calling the Super(). Once I fixed my .cpp and .h and then went through the deleting of the saved/intermediate/files. Then started my project it worked.

So I would suggest looking at your code, that's most likely the reason it's crashing.

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answered Feb 26 '18 at 08:08 PM

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SKING14
16 1 4

avatar image FlowStateGames Apr 28 '18 at 02:39 PM

Attn: coders: especially those used to higher-level languages (raises hand)

This is probably the answer. Until you truly are used to UEc++ (it is its own beast), just put nullptr checks EVERYWHERE. I'm looking for the 'best practices' check, but I know it uses ensure. Simple "== nullptr" checks can break the things because... UEc++. I'll edit/reply when I find it.

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I'm trying to open Epic Games Launcher and I get a black screen with the following error in the log file Failed to load 'aqProf.dll' (GetLastError=126) LogWindows: File 'aqProf.dll' does not exist LogWindows: Failed to load 'VSPerf140.dll' (GetLastError=126) LogWindows: File 'VSPerf140.dll' does not exist LogWindows: Failed to load 'VtuneApi.dll' (GetLastError=126) LogWindows: File 'VtuneApi.dll' does not exist LogWindows: Failed to load 'VtuneApi32e.dll' (GetLastError=126) LogWindows: File 'VtuneApi32e.dll' does not exist

What do I need to do to rectify please?

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answered Nov 13 '17 at 02:12 PM

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FinnyGamer646
6 1 2 2

avatar image Penton Nov 18 '17 at 07:41 PM

okay, so I looked into all my crashes and it seems those .dll files are listed as errors but are not the direct reason for them crashing. To fix this issue go in to you project folder under (documents/unreal projects/PROJECT NAME). And delete the "intermediate" and "saved" folders.

avatar image Wild Profiler Jan 08 '18 at 03:13 AM

It doesn't work.After I deleted the "intermediate" and "saved" folders and the crash happened again.

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我也遇到过这个问题,我的UE4版本是4.17.2,打包后的程序在别的电脑运行报这个错,我在新电脑上安装DXSDK_Aug08.exe和狸窝视频解码器之后就可以运行了,不知道是解码器的问题还是环境的问题,没太深究,大家可以试试,希望能解决你们的问题。

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answered Jul 15 '18 at 08:44 AM

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zhang2951
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Hi, I just had this exact problem - my project would just crash every single time I tried to launch it, and I'd get the exact same lines in the crash logs about missing .dll objects and so on.

It happened after my project crashed while working on some cloth physics assets. The only way I could get the project back online was to locate all the physics assets and the mesh assets they were associated with and remove them from the content directories.

If you're having this issue after working with some physics assets - try removing them

Deleting the 'saved' and 'intermediate' folders did nothing.

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answered Sep 27 '18 at 08:48 PM

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BarryLegg
6 1 3

avatar image Gomez_Elguabo Oct 13 '18 at 07:38 PM

Another way is, disable all unneccesary windows services. I used my asus optimiser project worked again.

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At the first time tha game was started but now I have the yours problem... I tryed to delete the folders but the game doesn't go... please help me.

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answered Dec 12 '17 at 01:52 PM

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simoalfo
1

avatar image ankurt44 Dec 14 '17 at 07:40 PM

Same for me. I deleted those folders and it didn't help.

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I have the solution: you must go into management devices on your pc and disable your intel video's and only if you have Nvidia on your pc.

perform this procedure only if you have Nvidia in your PC together with another video card intel disable the intel card and this will start Nvidia

I do not take responsibility if you cause damage to your PC

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answered Jan 08 '18 at 03:18 PM

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simoalfo
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I have no idea how to code honestly this all sounded confusing af If you dont mind please tell me how to fix this in code just write out instructions or add me on discord Richcarlos#6271 ty this is much apreciated

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answered Mar 21 '18 at 01:52 PM

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Richcarlos
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Hello guys; I don't play games but my architectural render program (OS Windows10) works with Unreal as render engine and I came across the exact same problem. After half a day of trying and cleaning registries and all I thought of an old bushtrick; create another user for Windows on your computer; log into that one and start the software.

Worked for me.

It's not long term solution, but at least I could continue....

Greetings from sunny Amsterdam.

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answered Apr 19 '18 at 05:16 PM

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pim755
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Too new to edit my reply to SKING about the root cause being null pointers / references, so:

Here I'm using what I believe is the best practice for inline null checks on my Movement component:

 if(!ensure(Movement != nullptr)) return;

This is discussed in much better detail by the accepted answer here

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answered Apr 28 '18 at 03:27 PM

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FlowStateGames
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Just fixed this issue when i was starting Epic Launcher, run as admin fixed it. Launcher opened and started downloading.

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answered Jun 11 '18 at 01:10 PM

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icantspele
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I had this issue recently, I tried to delete my saved and intermediate folders which did not work. I deleted UE4's ini in the config folder of my project. This allowed me to finally load my project. After trying to load my map it would crash again pointing to an obvious error within the map.

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answered Sep 19 '18 at 03:08 PM

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imKindaHectik
1

avatar image chrisradsby Nov 20 '18 at 12:36 AM

Deleting the ini folders worked for me too. I'm not sure what caused the crashing but something went wrong for sure.

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I got a same error and it drove me crazy for two days, I tried several ways to fix it, and it success! for now at least. I am using Dell G7 18GB RAM with GTX 1060 6GB White Sapphire. Got the error from 21 December 2018 fixed 23 December 2018 Here what I done to my Laptop..

  1. quarantine the "saved" and "intermediate" folder from document/Unreal Projects/MyProject to somewhere (you decide).

  2. Download and install DirectX 9 SDK from (I do not own this website, or you can google it) https://softfamous.com/directx-9-sdk/

  3. If you get the error code s1023 while installing the DirectX, read this https://support.microsoft.com/en-us/help/2728613/s1023-error-when-you-install-the-directx-sdk-june-2010

Thanks to: 1. Penton 2. zhang2951

Special Note: Do not disable your Intel Graphic inside "Device Manager", your computer display will just get worse or maybe blue screen.

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answered Dec 23 '18 at 05:18 PM

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vikenosha
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avatar image KEATE- Jan 15 '19 at 03:22 AM

Hi,Which version of UE4 do you use?

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Most recently for me, this problem seemed to be caused by having Auto Reimport enabled on some content directories, which hadn't saved their content properly before a crash.

I think, because the option for 'Detect Changes on Startup' in the Auto Reimport settings was enabled - every time I tried to reload the project the editor got confused, freaked out, and shut down every time.

The only way to get it to stay open was to find the offending content directory in Windows and move all it's contents onto my desktop or somewhere else entirely away from the project folder. Then relaunch the editor. If you've finally got the editor to stay open by doing this, you should then go into the Auto Reimport settings and delete the offending 'Directories to Monitor' array. After that, you can bring the content back into your project from your desktop (or wherever you put it) and save everything properly.

The real issue I think is with the options in Auto Reimport for 'Detect Changes On Startup,' 'Auto Delete Assets,' and 'Auto Create Assets' which are all enabled by default. Now, whenever I use Auto Reimport I disable all these options and I've not had a problem with it since.

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answered Feb 06 '19 at 09:58 AM

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BarryLegg
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