Summary
My UEFN crash while working on huge WBP. Some binding was empty as this moment (particularly event).
Since, I can’t open the WBP back as it crash the editor instantly.
In .log I got error though binding, making it crash. Fix validation issues doesn’t work to.
[479]LogBlueprint: Error: [AssetLog] /XXX/UIKit/Blueprint/WBP_Shop.WBP_Shop: [Compiler] Event 'WBP_Product_Row_13.BuyInCashProduct1.On Clicked => ()': A source path is required, but not set.
[2026.02.12-12.35.16:200][402]LogOutputDevice: Error: === Handled ensure: ===
[2026.02.12-12.35.16:200][402]LogOutputDevice: Error:
[2026.02.12-12.35.16:200][402]LogOutputDevice: Error: Ensure condition failed: !AssetData.PackageName.IsNone() [File:Z:\UEVFS\Root\Engine\Source\Runtime\AssetRegistry\Private\AssetRegistryHelpers.cpp] [Line: 329]
[2026.02.12-12.35.16:200][402]LogOutputDevice: Error: Failed to find asset data for package: /AnimTools/Assets/ControlRigMacros/ControlRigMacros.ControlRigMacros_C
Currently can’t reopen WBP
Please select what you are reporting on:
Unreal Editor for Fortnite
What Type of Bug are you experiencing?
UI/Tools
Steps to Reproduce
Create WBP with a lot of binding (I’ve more than 200).
Add new event variable
Bind them without select output
Expected Result
Compilation error but nothing else
Observed Result
Crash UEFN. Can’t re-open blueprint back, so it’s a dead uasset currently
I can’t open it, duplicate, rename, move, or delete it
Platform(s)
Windows