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UE 4.12 Stops initializing at 35%

I started Unreal engine, 4.12.4, then 4.12.5 when it came out, and it stopped initializing at 35% and shows this: alt Serialization Error : Action Needed Corrupt data found, please verify your installation

I have verified the engine 2 times, and reinstalled 2 times, with deleting the data left in /Users/Shared/Unreal Engine/4.12 It then shows the crash reporter screen with this stacktrace:

 MachineId:CD4E6D96BB418FE97A1D349F5E699F42
 EpicAccountId:531d2123a07241ae93395eb2e163244b
 
  SEGV_MAPERR at 0x3
 
 FGenericPlatformMisc::RaiseException(unsigned int) Address = 0x10211374b (filename not found) [in UE4Editor-Core.dylib]
 FOutputDeviceMacError::Serialize(wchar_t const*, ELogVerbosity::Type, FName const&) Address = 0x1022b54e6 (filename not found) [in UE4Editor-Core.dylib]
 FOutputDevice::Logf(wchar_t const*, ...) Address = 0x10236cf27 (filename not found) [in UE4Editor-Core.dylib]
 FDebug::AssertFailed(char const*, char const*, int, wchar_t const*, ...) Address = 0x1023684c4 (filename not found) [in UE4Editor-Core.dylib]
 FArchiveFileReaderGeneric::InternalPrecache(long long, long long) Address = 0x10219629f (filename not found) [in UE4Editor-Core.dylib]
 FArchiveFileReaderGeneric::Serialize(void*, long long) Address = 0x10219654e (filename not found) [in UE4Editor-Core.dylib]
 FMemoryDerivedDataBackend::LoadCache(wchar_t const*) Address = 0x119174917 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseBootCache(wchar_t const*, wchar_t const*, FString&) Address = 0x11916e008 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseNode(wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x119169e56 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseHierarchicalCache(wchar_t const*, wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x11916e454 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseNode(wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x119169f43 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseAsyncPut(wchar_t const*, wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x11916eb13 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseNode(wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x11916a209 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseKeyLength(wchar_t const*, wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x11916e8f4 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::ParseNode(wchar_t const*, FString const&, wchar_t const*, TMap<FString, FDerivedDataBackendInterface*, FDefaultSetAllocator, TDefaultMapKeyFuncs<FString, FDerivedDataBackendInterface*, false> >&) Address = 0x11916a146 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataBackendGraph::FDerivedDataBackendGraph() Address = 0x11916891e (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataCache::FDerivedDataCache() Address = 0x1191984ab (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 InternalSingleton() Address = 0x1191662ec (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataCacheModule::GetDDC() Address = 0x1191ae609 (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FDerivedDataCacheModule::StartupModule() Address = 0x1191ae57f (filename not found) [in UE4Editor-DerivedDataCache.dylib]
 FModuleManager::LoadModuleWithFailureReason(FName, EModuleLoadResult&, bool) Address = 0x102428502 (filename not found) [in UE4Editor-Core.dylib]
 FModuleManager::LoadModule(FName, bool) Address = 0x102426e36 (filename not found) [in UE4Editor-Core.dylib]
 IDerivedDataCacheModule* FModuleManager::LoadModulePtr<IDerivedDataCacheModule>(FName) Address = 0x1023c83f4 (filename not found) [in UE4Editor-Core.dylib]
 GetDerivedDataCache() Address = 0x10238db90 (filename not found) [in UE4Editor-Core.dylib]
 GetDerivedDataCacheRef() Address = 0x10238dbf8 (filename not found) [in UE4Editor-Core.dylib]
 GetGlobalShaderMap(EShaderPlatform, bool) Address = 0x1044fbe01 (filename not found) [in UE4Editor-Engine.dylib]
 FEngineLoop::PreInit(wchar_t const*) Address = 0x102031cab (filename not found) [in UE4Editor]
 GuardedMain(wchar_t const*) Address = 0x102046eb1 (filename not found) [in UE4Editor]
 -[UE4AppDelegate runGameThread:] Address = 0x102058edc (filename not found) [in UE4Editor]
 -[FCocoaGameThread main] Address = 0x102283776 (filename not found) [in UE4Editor-Core.dylib]
 __NSThread__start__ Address = 0x7fff8ca23ee4 (filename not found) [in Foundation]
 _pthread_body Address = 0x7fff9172b9b1 (filename not found) [in libsystem_pthread.dylib]
 _pthread_body Address = 0x7fff9172b92e (filename not found) [in libsystem_pthread.dylib]
 thread_start Address = 0x7fff91729385 (filename not found) [in libsystem_pthread.dylib]

This error is stopping me from working on my project, so if please try to fix this ASAP.

Signed, Eli

Product Version: UE 4.12
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asked Jul 10 '16 at 04:15 PM in Bug Reports

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Codekrafter
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2 answers: sort voted first

Hey Codekrafter,

This is currently a known issue, UE-31175. This issue is being investigated by our developers; however, there is currently no timeline for when a fix will be released.

Let me know if you have any other questions regarding this issue.

Have a great day

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answered Jul 11 '16 at 01:13 PM

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Sean L ♦♦ STAFF
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avatar image Sean L ♦♦ STAFF Aug 10 '16 at 12:35 PM

As an update, UE-31175 was marked as a duplicate of UE-24658. So here is the link to the correct issue on the public bug tracker: https://issues.unrealengine.com/issue/UE-24658

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Sigh, There are three solutions for this, without getting too involved for OS X. First is install 4.13.0 preview 1. Any version < than 4.12.5 will keep coming up with this error (except for 4.6 or 4.7, but that's so far back!).

The second is very drastic. I created a separate account on my Mac, and logged in as it, then removed the Users/Shared/UnrealEngine/4.12 directory, went in as Epic Launcher, then reinstalled the 4.12.5 Engine.

Worked like a charm!

The final fix, which I confirmed worked after I did the above "new account" was deleting /Users/username/Library/Application Support/Epic/UnrealEngine/4.12/DerivedDataCache/Boot.ddc.

Wish I would've found that first.

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answered Aug 10 '16 at 02:49 AM

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ApolloSoftware
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