"Main menu" and "back to menu" in a Product Configurator

Hi guys,

I’ve created a product configurator using the UE5 template: it all works fine, with all the variants, cameras and environment. I have created a new level with a main menu widget with a button that opens the configurator level, and it works fine as well. Then I needed to create a “back to menu” button so I created another widget that opens in the configurator level, and that works too.

The problem is that I can open that configurator level only twice, because at the third time it crashes. Why?

It shows me this log, if this can help:

LoginId:24c26fd64b88b53fa52d13808cfd58a6
EpicAccountId:

Assertion failed: Index >= 0 [File:D:\build++UE5\Sync\Engine\Source\Runtime\CoreUObject\Public\UObject\UObjectArray.h] [Line: 747]

UnrealEditor_VariantManagerContent
UnrealEditor_VariantManagerContent
UnrealEditor_VariantManagerContent
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_CoreUObject
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_Engine
UnrealEditor_UnrealEd
UnrealEditor_UnrealEd
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
UnrealEditor
kernel32
ntdll