Crashes on launch

Development Platform & Builds
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1

Everytime I launch the engine, either with an old project or even a brand new empty one, the engine crashes. Ive tried reinstalling the engine 3 times, and ive even completely re-installed the epic launcher.

I have no idea what is happening. Last time I used it this was not happening, and this was less than 4 months ago.

2

this is the error I’m getting:

Assertion failed: Module [File:D:\Build++UE4\Sync\Engine\Source\Runtime\Core\Private\Modules\ModuleManager.cpp] [Line: 373] MeshUtilities

UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Core
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_Engine
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor_CoreUObject
UE4Editor
UE4Editor
UE4Editor
UE4Editor
UE4Editor
kernel32
ntdll