On packaging off projects i got the same error:
[2015.05.01-19.42.27:035][ 0]LogWindows: === Critical error: ===
Fatal error!
KERNELBASE.dll!UnknownFunction (0x00007ffbfba38b9c) + 0 bytes [UnknownFile:0]
UE4Editor-Core.dll!FOutputDeviceWindowsError::Serialize() (0x00007ffbcf398074) + 0 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\windows\windowsplatformoutputdevices.cpp:95]
UE4Editor-Core.dll!FOutputDevice::Logf__VA() (0x00007ffbcf217999) + 185 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:139]
UE4Editor-CoreUObject.dll!UPackage::SavePackage() (0x00007ffbceeacd2e) + 40 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\coreuobject\private\uobject\savepackage.cpp:2465]
UE4Editor-UnrealEd.dll!UEditorEngine::SavePackage() (0x00007ffbca968411) + 115 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\editor.cpp:4416]
UE4Editor-UnrealEd.dll!UCookCommandlet::SaveCookedPackage() (0x00007ffbcaebd7cf) + 110 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:455]
UE4Editor-UnrealEd.dll!UCookCommandlet::Cook() (0x00007ffbcae6fde9) + 62 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:1344]
UE4Editor-UnrealEd.dll!UCookCommandlet::Main() (0x00007ffbcaea07c8) + 5 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\commandlets\cookcommandlet.cpp:578]
UE4Editor-Cmd.exe!FEngineLoop::PreInit() (0x00007ff7d8abba3a) + 96 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:1536]
UE4Editor-Cmd.exe!GuardedMain() (0x00007ff7d8ab21fb) + 15 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:110]
UE4Editor-Cmd.exe!GuardedMainWrapper() (0x00007ff7d8ab26ea) + 5 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor-Cmd.exe!WinMain() (0x00007ff7d8ac2219) + 17 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor-Cmd.exe!__tmainCRTStartup() (0x00007ff7d8ac2d05) + 21 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]
KERNEL32.DLL!UnknownFunction (0x00007ffbfe4413d2) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffbfe595444) + 0 bytes [UnknownFile:0]
ntdll.dll!UnknownFunction (0x00007ffbfe595444) + 0 bytes [UnknownFile:0]
[2015.05.01-19.42.27:036][ 0]LogExit: Executing StaticShutdownAfterError
[2015.05.01-19.42.27:057][ 0]LogWindows: FPlatformMisc::RequestExit(1)
[2015.05.01-19.42.27:057][ 0]Log file closed, 05/01/15 21:42:27
Previous Day it worked without a error. I hope someone can help me.
Greetings,
Florian Kaiser