mixup
December 9, 2025, 7:31am
1
#When I start the tool and open a widget blueprint for the first time, an ‘ensure failed’ message appears.
Ensure condition failed: !AssetData.PackageName.IsNone() [File:Z:\UEVFS\Root\Engine\Source\Runtime\AssetRegistry\Private\AssetRegistryHelpers.cpp] [Line: 329]
Ensure condition failed
1 Like
Elvios
December 19, 2025, 3:54am
2
I’ve seen at least three other people having this problem. Could you please take a look ? @Flak
Elvios
December 19, 2025, 3:57am
3
Here are two error messages reported by two members of a UEFN Discord community, so it seems this issue is affecting multiple people. One person tried reinstalling everything related to Fortnite/UEFN and deleting local files, but it didn’t change anything
LoupFr
December 19, 2025, 10:48am
4
I have the same problem. I’ve tried everything: uninstalling and reinstalling UEFN and Fortnite, checking the folders, deleting the cache and temporary files, changing the UEFN project… Nothing works. So now I’m stuck and unable to do anything.
I am having this issue as well. Anyone with this issue, also not able to validate files when launching a session? Followed by a crash every time?
LoupFr
January 10, 2026, 2:18pm
6
Still the same bug, no change even though it’s been a month…
Fallafy
January 21, 2026, 3:54pm
8
Same here @flak @Elvios exact same error log and happens when I try to open a widget. I think this somehow messed up all my widgets. Now even when I display a basic message with the Hud device it’s off centered to the left by about 200px even if placement and anchoring is centered. and this is with a default HUD Widget. No matter what I do it keeps moving my widgets.
Ensure condition failed: !AssetData.PackageName.IsNone() [File:Z:\UEVFS\Root\Engine\Source\Runtime\AssetRegistry\Private\AssetRegistryHelpers.cpp] [Line: 329]
Flak
January 22, 2026, 10:37am
9
Hello, please post this in the Issues and Bug Reporting forum so it can be investigated. Thank you!
LoupFr
January 26, 2026, 5:58pm
10
SOLUTION : Try to set Asset Editor Open Location to Main Window in the Editor Preferences . Then, open one of those assets.
