[4.10.0 / 3] Engine Crashes When Opening the Widget Editor

(Sorry for awful English)
I’m using Unreal Engine 4.10.0 Preview 3
And it worked pretty well, but suddenly when I open the widget editor, it crashes.
I used the widget editor well in 4.10.0 Preview 3 previously, but suddenly it crashes!
I deleted and reinstalled the engine, and I made a new project but it still crashes.

Here’s the log file:

Log File

And this is the CrashContext.runtime-xml: (I removed all <)

-FGenericCrashContext>

-RuntimeProperties>

Version>1/Version>

ProcessId>2672/ProcessId>

IsInternalBuild>0/IsInternalBuild>

IsPerforceBuild>0/IsPerforceBuild>

IsSourceDistribution>0/IsSourceDistribution>

GameName>f/GameName>

ExecutableName>UE4Editor/ExecutableName>

BuildConfiguration>Development/BuildConfiguration>

PlatformName>Windows/PlatformName>

PlatformNameIni>Windows/PlatformNameIni>

EngineMode>Editor/EngineMode>

EngineVersion>4.10.0-2742829+++depot+UE4-Releases+4.10/EngineVersion>

CommandLine/>

LanguageLCID>1042/LanguageLCID>

DefaultLocale>ko_KR/DefaultLocale>

IsUE4Release>1/IsUE4Release>

UserName/>

BaseDir>C:/Program Files/Epic Games/4.10/Engine/Binaries/Win64//BaseDir>

RootDir>C:/Program Files/Epic Games/4.10//RootDir>

MachineId>693815804F0735CFD48DF084367B371E/MachineId>

EpicAccountId>e0dc99214f6e48b8ad3ee1817bb75f2d/EpicAccountId>

CallStack/>

SourceContext/>

UserDescription/>

ErrorMessage>Assertion failed: IsValid() [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 739] /ErrorMessage>

MiscNumberOfCores>4/MiscNumberOfCores>

MiscNumberOfCoresIncludingHyperthreads>4/MiscNumberOfCoresIncludingHyperthreads>

MiscIs64bitOperatingSystem>1/MiscIs64bitOperatingSystem>

MiscCPUVendor>GenuineIntel/MiscCPUVendor>

MiscCPUBrand>Intel(R) Core™ i5-4690 CPU @ 3.50GHz/MiscCPUBrand>

MiscPrimaryGPUBrand>AMD Radeon ™ R9 380 Series/MiscPrimaryGPUBrand>

MiscOSVersionMajor>Windows 10/MiscOSVersionMajor>

MiscOSVersionMinor/>

CrashDumpMode>0/CrashDumpMode>

MemoryStatsTotalPhysical>8505069568/MemoryStatsTotalPhysical>

MemoryStatsTotalVirtual>140737488224256/MemoryStatsTotalVirtual>

MemoryStatsPageSize>4096/MemoryStatsPageSize>

MemoryStatsTotalPhysicalGB>8/MemoryStatsTotalPhysicalGB>

MemoryStatsAvailablePhysical>5395841024/MemoryStatsAvailablePhysical>

MemoryStatsAvailableVirtual>140735192137728/MemoryStatsAvailableVirtual>

MemoryStatsUsedPhysical>703995904/MemoryStatsUsedPhysical>

MemoryStatsPeakUsedPhysical>703995904/MemoryStatsPeakUsedPhysical>

MemoryStatsUsedVirtual>1519697920/MemoryStatsUsedVirtual>

MemoryStatsPeakUsedVirtual>1519697920/MemoryStatsPeakUsedVirtual>

MemoryStatsbIsOOM>0/MemoryStatsbIsOOM>

MemoryStatsOOMAllocationSize>0/MemoryStatsOOMAllocationSize>

MemoryStatsOOMAllocationAlignment>0/MemoryStatsOOMAllocationAlignment>

/RuntimeProperties>

-PlatformProperties>

PlatformIsRunningWindows>1/PlatformIsRunningWindows>

/PlatformProperties>

/FGenericCrashContext>

As you can see, the error is:
Assertion failed: IsValid() [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.10\Engine\Source\Runtime\Core\Public\Templates\SharedPointer.h] [Line: 739]

this one, but I don’t even have D drive…
And I searched for BuildFarm on ‘My Computer’, there was no result.

Help me, please!

Hello yeshjho,

I have a few questions for you that will help narrow down what issue it is that you are experiencing.

Quick questions:

  1. I noticed you said that you could reproduce this in a clean project. Could you provide a detailed list of steps to reproduce this issue on our end?
  2. Can you provide screen shots of any blueprints that may be involved with this issue?
  3. Could you provide your dxdiag?
  1. Open the 4.10.0 editor
  2. Make a clean project
  3. Open that project
  4. Make a widget
  5. Open that widget
  6. Crash and crash reporter window opens

Well… All widget blueprint crashes, what screenshot do you exactly need?

Did you mean it, right…?
link text

Thank you for the information provided, however I was not able to reproduce this issue on our end. Could you provide your machine’s dxdiag so as to help rule out any hardware related issues?

Thank you for the information provided, however I was not able to reproduce this issue on our end. Could you provide your machine’s dxdiag so as to help rule out any hardware related issues? I have another set of users who are having the same issue that you are experiencing. I am going to close this thread and start redirecting users for tracking purposes. to the link below. Please visit that thread for future updates.

Link: Assertion failed: IsValid() File:D:\BuildFarm - UI - Epic Developer Community Forums

I posted on the thread you gave, thank you