Cant Open Project, Crash at 79%

Tonight I deleted a ton of meshes from my scene while also unchecking VictoryPlugin from Plugins. UE4 told me it needed to reboot, and when it does I get:

MachineId:C64E7B084A9E678B7BC9EE8A979F11FA
EpicAccountId:c3ef41551ef64c7fb216e7bb90a5924c

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

Assertion failed: Class [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\CoreUObject\Public\UObject\Class.h] [Line: 2563]
ConstructObject called with a NULL class object

KERNELBASE + 35740 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!FOutputDevice::Logf__VA() + 248 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:144]
UE4Editor_Core!FDebug::AssertFailed() + 1079 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\misc\outputdevice.cpp:224]
UE4Editor!FEngineLoop::Init() + 738 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:1949]
UE4Editor_UnrealEd!EditorInit() + 920 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealed.cpp:63]
UE4Editor!GuardedMain() + 926 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launch.cpp:133]
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]

Every single time.

Any ideas? Oh, and it seems my copy/paste backups to another directory have not been functioning as I expected. I guess I should actually setup Git.

Can anyone help with this?

I had this same thing happen to me this afternoon - if you have an Oculus Rift DK2 it may be the cause. Re-boot, and set the Oculus to Extended Mode via the Rift Display Mode. My project opened after doing this, and the VR preview worked okay too.