Crash when opening editor after unpacking .pak file

A while ago I made a game and when clearing space I deleted the project files and decided to unpack the game using an Unreal Engine 4 Unpacker to unpack the .pak file. When opening the file the editor loaded up to 90% then it crashed and opened the Crash Reporter. I’m wondering if there are any fixes out there for this problem.

MachineId:B6C4EBD340D2C52FD204B690541E521F
EpicAccountId:751043a4402949388a3044da59325442

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

"Fatal error: [File:D:\BuildFarm\buildmachine_++depot+UE4-Releases+4.8\Engine\Source\Runtime\Core\Private\HAL\FileManagerGeneric.cpp] [Line: 605]
Invalid Bu

UE4Editor_Core!FDebug::AssertFailed() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\misc\outputdevice.cpp:355]
UE4Editor_Core!FGenericPlatformMemory::OnOutOfMemory() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\genericplatform\genericplatformmemory.cpp:54]
UE4Editor_Core!FMallocTBB::Realloc() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\private\hal\malloctbb.cpp:99]
UE4Editor_CoreUObject!TArray::Empty() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\public\containers\array.h:1572]
UE4Editor_CoreUObject!operator<<() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\core\public\containers\array.h:1201]
UE4Editor_CoreUObject!operator<<() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\coreuobject\private\uobject\packagefilesummary.cpp:216]
UE4Editor_UnrealEd!UEditorEngine::PackageIsAMapFile() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorserver.cpp:2058]
UE4Editor_UnrealEd!UEditorEngine::Map_Load() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorserver.cpp:2139]
UE4Editor_UnrealEd!UEditorEngine::HandleMapCommand() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorserver.cpp:5768]
UE4Editor_UnrealEd!UEditorEngine::Exec() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\editorserver.cpp:5262]
UE4Editor_UnrealEd!UUnrealEdEngine::Exec() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedsrv.cpp:742]
UE4Editor_UnrealEd!FEditorFileUtils::LoadMap() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\filehelpers.cpp:1992]
UE4Editor_UnrealEd!FEditorFileUtils::LoadDefaultMapAtStartup() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\filehelpers.cpp:3193]
UE4Editor_UnrealEd!FUnrealEdMisc::OnInit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealedmisc.cpp:300]
UE4Editor_UnrealEd!EditorInit() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\editor\unrealed\private\unrealed.cpp:86]
UE4Editor!GuardedMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\launch.cpp:133]
UE4Editor!GuardedMainWrapper() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:126]
UE4Editor!WinMain() [d:\buildfarm\buildmachine_++depot+ue4-releases+4.8\engine\source\runtime\launch\private\windows\launchwindows.cpp:200]

Hey Night_Tig3r_13,

We do not support unpacking of .pak files. When a project is packaged, it’s not meant to be unpacked. The crash that you’re experiencing looks like an Invalid BufferCount while reading your project though.

Good luck!