UE 4 project crashes on start up

Stu2Prof

Hey guys I recently tried re-opening an older project that I want to take some renders of for my portfolio however it wont open and gives me the crash report below. I am worried that the file might be permanently broken. Is there any way to resolve the problem?

MachineId:
EpicAccountId:

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

Assertion failed: (Index >= 0) & (Index < ArrayNum) [File:\BuildFarm\buildmachine_++depot+UE4-Releases+4.7\Engine\Source\Runtime\Core\Public\Containers\Array.h] [Line: 679] 
Array index out of bounds: 0 from an array of size -788848161

KERNELBASE + 35420 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_Core!FGenericPlatformString::LogBogusChars<wchar_t,char>() + 459 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\genericplatform\genericplatformstring.cpp:54]
UE4Editor_Core!operator<<() + 761 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\private\containers\string.cpp:1170]
UE4Editor_UnrealEd!operator<<() + 395 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\containers\sparsearray.h:402]
UE4Editor_UnrealEd!operator<<() + 21 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\core\public\containers\set.h:624]
UE4Editor_UnrealEd!FFileCache::ReadCache() + 316 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\autoreimport\filecache.cpp:174]
UE4Editor_UnrealEd!FFileCache::FFileCache() + 905 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\autoreimport\filecache.cpp:113]
UE4Editor_UnrealEd!FContentDirectoryMonitor::FContentDirectoryMonitor() + 55 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\autoreimport\contentdirectorymonitor.cpp:35]
UE4Editor_UnrealEd!FAutoReimportManager::SetUpDirectoryMonitors() + 2037 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\autoreimport\autoreimportmanager.cpp:581]
UE4Editor_UnrealEd!FAutoReimportManager::FAutoReimportManager() + 690 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\autoreimport\autoreimportmanager.cpp:216]
UE4Editor_UnrealEd!UAutoReimportManager::Initialize() + 60 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\autoreimport\autoreimportmanager.cpp:634]
UE4Editor_UnrealEd!UUnrealEdEngine::Init() + 1022 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\editor\unrealed\private\unrealedengine.cpp:110]
UE4Editor!FEngineLoop::Init() + 1247 bytes [d:\buildfarm\buildmachine_++depot+ue4-releases+4.7\engine\source\runtime\launch\private\launchengineloop.cpp:1967]
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]