line 724 BulkData compressed header read error

The lights of my building went off , and now my project is corrupted. I lost 4 days of work. ( even if UE4 does autosaves every 10 minutes, my last autosave is from 4 days ago). i get that error when i try to open my project or even just right-clicking it. Any ideas?


Also found in Saved/Logs this line inside a text document that repeats several times : [2022.05.22-21.02.56:124][795]LogWindows: Error: Error reentered: Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/Serialization/Archive.cpp] [Line: 724]
BulkData compressed header read error. This package may be corrupt!

Also found that inside unreal, if i click File - Validate Data, i get the same error.
And when i righ-click or double-click the level in the content browser, first it says ``Loading Objects…´´ and then it crashes.

Here is the FULL CRASH REPORT:
LoginId:70ad657f4eeb416ce4dcd399fe2aff21
EpicAccountId:829993d1e47f4292ae554f77f5d7a129

Fatal error: [File:D:/Build/++UE4/Sync/Engine/Source/Runtime/Core/Private/Serialization/Archive.cpp] [Line: 724] BulkData compressed header read error. This package may be corrupt!

UE4Editor_Core!FArchive::SerializeCompressed() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Serialization\Archive.cpp:728]
UE4Editor_CoreUObject!FUntypedBulkData::SerializeBulkData() [D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\BulkData.cpp:1601]
UE4Editor_CoreUObject!FUntypedBulkData::AsyncLoadBulkData() [D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\BulkData.cpp:829]
UE4Editor_CoreUObject!FFutureState::MarkComplete() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Async\Future.h:114]
UE4Editor_CoreUObject!FStateComplete::FStateComplete() [D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\BulkData.cpp:692]
UE4Editor_CoreUObject!FUntypedBulkData::LoadBulkDataWithFileReader() [D:\Build++UE4\Sync\Engine\Source\Runtime\CoreUObject\Private\Serialization\BulkData.cpp:704]
UE4Editor_Engine!FTextureSourceData::GetAsyncSourceMips() [D:\Build++UE4\Sync\Engine\Source\Runtime\Engine\Private\TextureDerivedDataTask.cpp:193]
UE4Editor_Engine!FTextureCacheDerivedDataWorker::DoWork() [D:\Build++UE4\Sync\Engine\Source\Runtime\Engine\Private\TextureDerivedDataTask.cpp:494]
UE4Editor_Engine!FAsyncTask::DoWork() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:272]
UE4Editor_Engine!FAsyncTask::DoThreadedWork() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Public\Async\AsyncWork.h:296]
UE4Editor_Core!FQueuedThread::Run() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\HAL\ThreadingBase.cpp:992]
UE4Editor_Core!FRunnableThreadWin::Run() [D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Windows\WindowsRunnableThread.cpp:86]

Our solution to this problem was:

  1. Remove the intermediate build folders:
    Binaries
    DerivedDataCache
    Intermediate

  2. Re-run the build

Hello, I can’t find it Binaries。Where can I find it?

I tried, but it doesn’t work.

hello, i got the same problem, have you solve it?

Hello. This error means an asset of your project is corrupt, and cannot be encrypted/decrypted with zlib by the engine. You can see the corrupt file in output window by changing the following lines in source code(Change log verbosity from Log to Fatal).

Or you can change output log verbosity from DefaultEngine.ini by writing

[Core.Log]
LogActor=VeryVerbose

what tf does that mean?