Getting crashes when editing linked layers with property access

Development Programming & Scripting
1

Every time I make edits to animation blueprints that contain linked layers, there is a nonzero chance that the editor will crash when I press the compile button. I press send report and restart. I go to the same animation blueprint that I was editing and just press compile over the already green checkmark ( no edits have been made. just click compile). The editor crashes. I have to duplicate the corrupted file, delete the old one, rename the duplicated file to the old corrupted one, fix up redirectors, and sometimes I have to update the cast to function which links to the parent animation blueprint. Occasionally the corruption gets so bad that I will need to open the local directory and delete some of the corrupted file just so that the project will load successfully in the editor. Any help would be nice. Here’s the report

Assertion failed: !bRequiresCachedVariable [File:D:\build++UE5\Sync\Engine\Plugins\Developer\PropertyAccessNode\Source\PropertyAccessNode\Private\K2Node_PropertyAccess.cpp] [Line: 94]

0x00007ffcacc5ea8f UnrealEditor-PropertyAccessNode.dll!UnknownFunction []
0x00007ffcbd54323e UnrealEditor-KismetCompiler.dll!UnknownFunction []
0x00007ffcc2e01aed UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffcc2ea8a59 UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffcc2d96cf6 UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffcc2d97104 UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffcc2d9635a UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffcc2d93d62 UnrealEditor-AnimGraph.dll!UnknownFunction []
0x00007ffcbd52c8ea UnrealEditor-KismetCompiler.dll!UnknownFunction []
0x00007ffcbd530696 UnrealEditor-KismetCompiler.dll!UnknownFunction []
0x00007ffcbd523d45 UnrealEditor-KismetCompiler.dll!UnknownFunction []
0x00007ffcd559a90c UnrealEditor-Kismet.dll!UnknownFunction []
0x00007ffcd5597568 UnrealEditor-Kismet.dll!UnknownFunction []
0x00007ffce4243e20 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fa066 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce452241e UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44f7baf UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce452241e UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44f8983 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fa4bb UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4523761 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce46bd9eb UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44ed48f UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45581ac UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4558322 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4555f91 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4504d6a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce453b5e6 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45500c3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fc11a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce451dac3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce46bd6ea UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44ed48f UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45581ac UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4558322 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4555f91 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4504d6a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce453b5e6 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45500c3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fc11a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce451dac3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce46bd6ea UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44ed48f UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45581ac UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4558322 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4555f91 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4504d6a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce453b5e6 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45500c3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fc11a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce451dac3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce46bd6ea UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44ed48f UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45581ac UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4558322 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4555f91 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4504d6a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce453b5e6 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45500c3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fc11a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce451dac3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce46bd6ea UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44ed48f UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45581ac UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4558322 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4555f91 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4504d6a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce453b5e6 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45500c3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fc11a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce451dac3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce46bd6ea UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44ed48f UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45581ac UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4558322 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4556681 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4555f91 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce4504d6a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce453b5e6 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce45500c3 UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce44fc11a UnrealEditor-CoreUObject.dll!UnknownFunction []
0x00007ffce451dac3 UnrealEditor-CoreUObject.dll!UnknownFunction []

2

were you able to resolve this

3

No. It still happens.

4

Its been a while but if you still are having this issue I was able to fix it back then by storing the variables that was causing the crash into another variable in the blue print thread safe and call that variable instead of calling directly from property access. I am guessing the crash happens because the property access is calling the variable before it has been initialized in the other blueprint. So like this if it has not been initialized yet you get a default value in your variable.

2 Likes
5

Identify the node that is causing the problem. For me it was the nodes going into “Predict ground movement Stop Location.” Once you have selected what you want in the property access node (usually in a linked animation layer), click on the dropdown arrow and select “Call Site” Change that to either game thread or worked thread POST-EVENT Graph. Hope that helps.

Screenshot 2025-04-18 181344
Screenshot 2025-04-18 1813441678Ă—823 143 KB

1 Like
6

It’s worked! :100:

7

I just ran into this with a slightly different version.

I had a UserWidget blueprint with a hard reference (cast) to a character blueprint that had a hard reference to the ABP_ItemAnimLayersBase file from the gameplay animation sample project.

As a result, the editor would hit that error on IDE launch or crash on a UGS launch.

I ended up just cleaning up the hard references to side step the issue but the underlying bug is still around.