Project crashing on launch UE 4.15.3 & 4.16.2

Added few new textures and updated my maps. Closed the project were everything was saved but didn’t run the project.
Rebooted my system and encountering continuous crash. Got no project backup plz let me know what can I do. (in a panic situation)



FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10f90000b (filename not found) [in UE4Editor-Core.dylib]
FOutputDeviceMacError::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x10fafba2f (filename not found) [in UE4Editor-Core.dylib]
FOutputDevice::Logf(wchar_t const*, …) Address = 0x10fbdc6cd (filename not found) [in UE4Editor-Core.dylib]
FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, …) Address = 0x10fb4293e (filename not found) [in UE4Editor-Core.dylib]
UEditorEngine::Map_Load(wchar_t const*, FOutputDevice&) Address = 0x1171acb18 (filename not found) [in UE4Editor-UnrealEd.dylib]
UEditorEngine::HandleMapCommand(wchar_t const*, FOutputDevice&, UWorld*) Address = 0x1171d3585 (filename not found) [in UE4Editor-UnrealEd.dylib]
UEditorEngine::Exec(UWorld*, wchar_t const*, FOutputDevice&) Address = 0x1171d008b (filename not found) [in UE4Editor-UnrealEd.dylib]
UUnrealEdEngine::Exec(UWorld*, wchar_t const*, FOutputDevice&) Address = 0x117e5688c (filename not found) [in UE4Editor-UnrealEd.dylib]
FEditorFileUtils::LoadMap(FString const&, bool, bool) Address = 0x117574d3e (filename not found) [in UE4Editor-UnrealEd.dylib]
FEditorFileUtils::LoadDefaultMapAtStartup() Address = 0x117584a01 (filename not found) [in UE4Editor-UnrealEd.dylib]
FUnrealEdMisc::OnInit() Address = 0x117e36a8f (filename not found) [in UE4Editor-UnrealEd.dylib]
EditorInit(IEngineLoop&) Address = 0x117e34bed (filename not found) [in UE4Editor-UnrealEd.dylib]
GuardedMain(wchar_t const*) Address = 0x10f449cfc (filename not found) [in UE4Editor]
-[UE4AppDelegate runGameThread:] Address = 0x10f45801a (filename not found) [in UE4Editor]
-[FCocoaGameThread main] Address = 0x10fab7346 (filename not found) [in UE4Editor-Core.dylib]
Unknown() Address = 0x7fffc7839c6d (filename not found) [in Foundation]
_pthread_body Address = 0x7fffdb579aab (filename not found) [in libsystem_pthread.dylib]
_pthread_body Address = 0x7fffdb5799f7 (filename not found) [in libsystem_pthread.dylib]
thread_start Address = 0x7fffdb5791fd (filename not found) [in libsystem_pthread.dylib]

Ok it got resolved, way relax now and this is what happen.

I added new textures to the project and updated my maps with the same. Renamed my maps (level files) relocated them to new folder, saved the project and closed the editor (Without testing if they were working), then turn off my system. On returning back to my project editor was crashing after loading 100%.

Updated my graphics drivers but no used.

Went through my project directory and found copies of maps in the location before relocating them.Few more of them which I never created and having name Default_MapName_C.
Deleted all of them, relaunch the editor and its working fine.

This engine not only builds awesome games but do plays some game with developer too :smiley: