UE4 crashes at 45% on startup ! please HELP

Hello community,
I really looked for a solution to my problem but I didn’t find, please help me!
When I launch UE4 version 4.17.0 from Epic Games Launcher it crashes at 45% and shows the crash reporter. I installed Visual Studio 2015, I downloaded the latest driver for my GPU, I tried to reinstall UE4 5-6 times but it still crashes at 45%. Here is the summary information:

LoginId:20a06ba84455a05c503399868fc222d9
EpicAccountId:7f26b7c41e4541a3afc249d91eec6b92

Assertion failed: Module [File:D:\Build++UE4+Release-4.17+Compile\Sync\Engine\Source\Runtime\Core\Private\Modules\ModuleManager.cpp] [Line: 350] MeshUtilities

UE4Editor_Core!FDebug::AssertFailed() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\misc\assertionmacros.cpp:349]
UE4Editor_Core!FModuleManager::LoadModuleChecked() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\core\private\modules\modulemanager.cpp:350]
UE4Editor_Engine!GetStaticMeshDerivedDataVersion() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:1081]
UE4Editor_Engine!BuildStaticMeshDerivedDataKey() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:1161]
UE4Editor_Engine!FStaticMeshRenderData::Cache() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:1260]
UE4Editor_Engine!UStaticMesh::CacheDerivedData() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:2201]
UE4Editor_Engine!UStaticMesh::PostLoad() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\staticmesh.cpp:2565]
UE4Editor_CoreUObject!UObject::ConditionalPostLoad() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:991]
UE4Editor_Engine!UBodySetup::PostLoad() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\engine\private\physicsengine\bodysetup.cpp:1179]
UE4Editor_CoreUObject!UObject::ConditionalPostLoad() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\obj.cpp:991]
UE4Editor_CoreUObject!EndLoad() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1561]
UE4Editor_CoreUObject!LoadPackageInternal() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1312]
UE4Editor_CoreUObject!LoadPackage() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:1403]
UE4Editor_CoreUObject!ResolveName() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:781]
UE4Editor_CoreUObject!StaticLoadObjectInternal() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:869]
UE4Editor_CoreUObject!StaticLoadObjectInternal() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:920]
UE4Editor_CoreUObject!StaticLoadObject() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectglobals.cpp:936]
UE4Editor_ViewportInteraction!APivotTransformGizmo::APivotTransformGizmo() [d:\build++ue4+release-4.17+compile\sync\engine\source\editor\viewportinteraction\gizmo\vipivottransformgizmo.cpp:43]
UE4Editor_CoreUObject!UClass::CreateDefaultObject() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\class.cpp:2687]
UE4Editor_CoreUObject!UObjectLoadAllCompiledInDefaultProperties() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:817]
UE4Editor_CoreUObject!ProcessNewlyLoadedUObjects() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\coreuobject\private\uobject\uobjectbase.cpp:895]
UE4Editor!FEngineLoop::PreInit() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launchengineloop.cpp:1835]
UE4Editor!GuardedMain() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\launch.cpp:127]
UE4Editor!GuardedMainWrapper() [d:\build++ue4+release-4.17+compile\sync\engine\source\runtime\launch\private\windows\launchwindows.cpp:134]
UE4Editor!WinMain() [d:\build++ue4+release-4.17+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

My system configuration : Windows 10 x64 , Intel(R) Core™ i7-4720HQ CPU @ 2.60GHz , RAM : 16,0 Gb , GPU : NVIDIA GeForce GTX 950M

I hope you’ll find a solution for my problem, thank you !

Try to get some UE4 source code from github and compile it manually (there is an instruction for it).

Okey I’ll try to do it and see if it will fix it or not, thanks for the answer !

Thank you so much it worked by compiling it manually ! Thank you for the answer you saved me !

What if you don’t want to compile from source?