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Unreal Engine 4.19.1 won't start

After pressing launch the loading screen starts and after 9% I get a crash report.

I tried verifing and reinstalling the engine. I dont have any projects in the "Unreal Projects" dircetory. I downloaded an older version (4.12) wich works perfectly fine.

Crash Report: LoginId:e99b129147655d76a62e19bf3b17e5a5 EpicAccountId:0063a871d3144d28a42e086fd6ee5152

Assertion failed: SerializeNum >= 0 [File:d:\build\++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\Containers/Array.h] [Line: 1078]

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:419] UE4Editor_DerivedDataCache!operator<<() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\core\public\containers\array.h:1078] UE4Editor_DerivedDataCache!FMemoryDerivedDataBackend::LoadCache() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\memoryderiveddatabackend.cpp:249] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseBootCache() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:635] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:154] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseHierarchicalCache() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:426] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:170] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseAsyncPut() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:337] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:186] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseKeyLength() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:378] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::ParseNode() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:174] UE4Editor_DerivedDataCache!FDerivedDataBackendGraph::FDerivedDataBackendGraph() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:91] UE4Editor_DerivedDataCache!FDerivedDataBackend::Get() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatabackends.cpp:922] UE4Editor_DerivedDataCache!FDerivedDataCache::FDerivedDataCache() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatacache.cpp:240] UE4Editor_DerivedDataCache!FDerivedDataCacheWithRollups::FDerivedDataCacheWithRollups() UE4Editor_DerivedDataCache!InternalSingleton() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatacache.cpp:1060] UE4Editor_DerivedDataCache!FDerivedDataCacheModule::StartupModule() [d:\build++ue4+release-4.19+compile\sync\engine\source\developer\deriveddatacache\private\deriveddatacache.cpp:1085] UE4Editor_Core!FModuleManager::LoadModuleWithFailureReason() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:505] UE4Editor_Core!FModuleManager::LoadModule() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:338] UE4Editor_Core!GetDerivedDataCache() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\coremisc.cpp:98] UE4Editor_Core!GetDerivedDataCacheRef() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\core\private\misc\coremisc.cpp:109] UE4Editor_Engine!CompileGlobalShaderMap() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\engine\private\shadercompiler\shadercompiler.cpp:3946] UE4Editor!FEngineLoop::PreInit() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:1817] UE4Editor!GuardedMain() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\launch.cpp:127] UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134] UE4Editor!WinMain() [d:\build++ue4+release-4.19+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:210] UE4Editor!__scrt_common_main_seh() [f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl:253] kernel32 ntdll

Thanks, Max

Product Version: UE 4.19
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asked Apr 24 '18 at 06:14 PM in Installation & Setup

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maxhoch2
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,Have you ever find a solution to this? I'm having the same issue line by line! thanks

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answered Oct 12 '18 at 06:23 PM

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Juan1tocam1nador
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