Please refresh node or break links to remove pin. But engine crashes?

Development Character & Animation
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1

Using unreal engine 5 preview (animbp templates)

Was working with animation layers and added an extra input pose to create some custom blending stuff. When I compiled the engine crashed. After that I could not even open the .uproject. It would just instantly crash all the time. Tried getting a saved backup file but seems like the newest one is after this extra input pin. I guess this is what I get for not having source control…

After I used the backup I managed to open up the .uproject but everytime I do anything with the animation blueprint template the engine crashes with this error:

[2022.03.10-13.58.45:097][300]LogBlueprint: Error: [AssetLog] C:\Unreal Engine Projects\StrafeController\Plugins\CustomAnimationSystem\Content\Template_AnimInstanceBase_Auto1.uasset: [Compiler] In use pin In Pose no longer exists on node AnimationLayers . Please refresh node or break links to remove pin.

How am I supposed to fix it when I can’t open the class??? What to do?

2

Animation Pins are massively bugged in UE5, it needs an update because it will always crash the editor if you modify them.

3

Can you post actual crash stack? (CrashReportClient window message)

4

yes… and with blueprints even if you restore a single file from backup it’s possible that other files require updating as well to avoid corruption. So Git it is.

5

If it’s a huge task to redo the animation blueprint (it usually is) and if all seems lost, you could try to modify the engine source a bit so it allows you to remove the invalid pin and save the file. After that point restore the engine code back to what it was. It’s a messy task but it’s a possible solution. You also need to inspect the log more closely because the error message you posted (from UK2Node::ValidateOrphanPins) is not the part where it crashes.