4.7.2 crashes, negative delta time

Development Platform & Builds
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1

After loading 4.7.2 this bug makes unreal unusable. 4.6 worked ok.
AMD FX 6 core, 8GB, NVIDIA 660, Win7 ultimate.
Any advice?

Unknown exception - code 00000001 (first/second chance not available)

Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\Engine\Private\UnrealEngine.cpp] [Line: 1012]
Detected negative delta time - on AMD systems please install http:////files.aoaforums.com//I3199-setup.zip.htm

KERNELBASE + 37901 bytes
UE4Editor_Core!FOutputDeviceWindowsError::Serialize() + 292 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor_Core!FMsg::Logf__VA() + 463 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:526]
UE4Editor_Engine!UEngine::UpdateTimeAndHandleMaxTickRate() + 492 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\engine\private\unrealengine.cpp:1014]
UE4Editor!FEngineLoop::Tick() + 1879 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:2202]
UE4Editor!GuardedMain() + 1404 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:142]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

2

Downloaded source and buiilt in visual studio and started working again.

3

Hey JussiL,

I wish I was able to get to your issue earlier, but I’m glad you got it working. Occasionally builds fail for any number of reasons. When working with source builds, a recompile can be a good starting place. If you have any further problems, please let us know!!

4

got the same exact problem, what exactly did you do to fix this?

5

Hi xForsaa,
You must download the engine source code from Github and built it manually. Command scripts are included in source package to do this easily. There are clear instructions for manual builds.

One reason for this fault could be ready packages being linked to some different OS library version than in your machine and doing the built locally solves the problem.
br Jussi