Unkown error causing crashing when opening level - Possible two-sided translucency material related

I’m pretty new to UE4, and I don’t now how to read crash logs properly. As such when I left my level and have come back into it but UE4 is crashing when loading and I don’t know how to get my level back. Any help is appreciated.


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

Assertion failed: !HasAnyFlags(RF_NeedLoad|RF_NeedPostLoad) [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.6\Engine\Source\Runtime\CoreUObject\Private\UObject\UObjectLinker.cpp] [Line: 96] 
Detaching from existing linker for ..//..//..//..//

KERNELBASE + 24684 bytes
UE4Editor_Core + 3092349 bytes
UE4Editor_Core + 1597688 bytes
UE4Editor_Core + 1479058 bytes
UE4Editor_CoreUObject + 1690196 bytes
UE4Editor_CoreUObject + 945216 bytes
UE4Editor_CoreUObject + 947419 bytes
UE4Editor_CoreUObject + 1062891 bytes
UE4Editor_CoreUObject + 1460613 bytes
UE4Editor_CoreUObject + 1511826 bytes
UE4Editor_CoreUObject + 1580292 bytes
UE4Editor_ContentBrowser + 1469927 bytes
UE4Editor_ContentBrowser + 1842214 bytes
UE4Editor_ContentBrowser + 1342247 bytes
UE4Editor_ContentBrowser + 1386087 bytes
UE4Editor_ContentBrowser + 1891974 bytes
UE4Editor_ContentBrowser + 1336641 bytes
UE4Editor_ContentBrowser + 1382442 bytes
UE4Editor_ContentBrowser + 1371670 bytes
UE4Editor_ContentBrowser + 1977407 bytes
UE4Editor_ContentBrowser + 1892559 bytes
UE4Editor_Slate + 428894 bytes
UE4Editor_Slate + 157325 bytes
UE4Editor_Slate + 829529 bytes
UE4Editor_Slate + 768779 bytes
UE4Editor_Core + 2484316 bytes
UE4Editor_Core + 2400763 bytes
UE4Editor_Core + 2489275 bytes
UE4Editor_Core + 2387186 bytes
user32 + 9268 bytes
user32 + 8855 bytes
UE4Editor_Core + 2490486 bytes
UE4Editor!FEngineLoop::Tick() + 3434 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launchengineloop.cpp:2193]
UE4Editor!GuardedMain() + 479 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\launch.cpp:131]
UE4Editor!GuardedMainWrapper() + 26 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() + 249 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.6\engine\source\runtime\launch\private\windows\launchwindows.cpp:202]
UE4Editor!__tmainCRTStartup() + 329 bytes [f:\dd\vctools\crt\crtw32\dllstuff\crtexe.c:618]

Hey DJRD4465 -

Thank you for your report. Let’s see if we can first and foremost get you back into your project. In Windows Explorer, open your project directory. You should see several subfolders (Config, Content, Intermediate, etc.). Try deleting every sub folder EXCEPT Config, Content and Source if you are working in a C++ project. Afterwards open the engine up again and try to open the project.

If this does not clear up the problem then it may be a particular asset which has been corrupted. For this it would be helpful to take a moment and recall the last few things you edited or added in the level (mesh, Materials, etc.). Starting with the very last item go into your Content subfolder and remove the *.uasset file from the directory. (Try moving it temporarily to you desktop.) Once it has been removed from the Content Folder try to open the Project again. If you do find a particular *.uasset that when removed allows your project to open please zip this file up and post here for further testing.

Thank You and Let me know if you still cannot get into your engine. In the meantime we will try to track down the crash via the log files.

Eric Ketchum