Unreal Engine 5.3 Crashing when the project loads

[MrJulyCrab (MrCrab)]

Hi there, so I decided to migrate my project from 5.2 to 5.3 but when I open the project, and finishes loading it tries to open the editor and it just crashes, here’s the log:
Assertion failed: Index == TypeIndex [File:D:\build++UE5\Sync\Engine\Source\Runtime\Core\Public\Misc\TVariant.h] [Line: 118]

UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
UnrealEditor_Core
kernel32
ntdll

[L1z4rD89]

Hey @MrJulyCrab

could you

1. Try to delete the INTERMEDIATE folder and open it, if this does not work => 2

2. Try to copy your project and then delete everything except

   CONFIG
   *.URPOJECT

   and then open it.

If this works (2), you could have a look at the DefaultEngine.ini and set your DefaultMap empty like

[MrJulyCrab (MrCrab)]

Number 2 worked, thank you so much!!