foot placement block within the animation graph in the Unreal Engine 5 Animation Game Sample project

Development Programming & Scripting
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1

When I click on the foot placement block within the animation graph in the Unreal Engine 5 Animation Game Sample project, I get an error. The error is as follows:

Fatal error!

Unhandled Exception: EXCEPTION_ACCESS_VIOLATION reading address 0x0000000000000000

0x00007ffb4a0e096b UnrealEditor-AnimGraph.dll!UnknownFunction
0x00007ffb4a098df4 UnrealEditor-AnimGraph.dll!UnknownFunction
0x00000185d6f735c8 UnrealEditor-AnimationBlueprintEditor.dll!UnknownFunction
0x00000185d6fc527c UnrealEditor-AnimationBlueprintEditor.dll!UnknownFunction
0x00007ffb3d8397d0 UnrealEditor-Kismet.dll!UnknownFunction
0x00007ffb3e738cc5 UnrealEditor-GraphEditor.dll!UnknownFunction
0x00007ffb3e731ad5 UnrealEditor-GraphEditor.dll!UnknownFunction
0x00007ffb3e6c32ac UnrealEditor-GraphEditor.dll!UnknownFunction
0x00007ffb4bcdbe6b UnrealEditor-Slate.dll!UnknownFunction
0x00007ffb4bcc743d UnrealEditor-Slate.dll!UnknownFunction
0x00007ffb4bd21ec8 UnrealEditor-Slate.dll!UnknownFunction
0x00007ffb4bd113bb UnrealEditor-Slate.dll!UnknownFunction
0x00007ffb4bd04091 UnrealEditor-Slate.dll!UnknownFunction
0x00007ffbcfa9f956 UnrealEditor-ApplicationCore.dll!UnknownFunction
0x00007ffbcfa87137 UnrealEditor-ApplicationCore.dll!UnknownFunction
0x00007ffbcfaa299c UnrealEditor-ApplicationCore.dll!UnknownFunction
0x00007ffbcfa81171 UnrealEditor-ApplicationCore.dll!UnknownFunction
0x00007ffc0391ef5c USER32.dll!UnknownFunction
0x00007ffc0391e684 USER32.dll!UnknownFunction
0x00007ffbcfac2316 UnrealEditor-ApplicationCore.dll!UnknownFunction
0x00007ff72c28871b UnrealEditor.exe!UnknownFunction
0x00007ff72c2ae5ac UnrealEditor.exe!UnknownFunction
0x00007ff72c2ae6ba UnrealEditor.exe!UnknownFunction
0x00007ff72c2b209e UnrealEditor.exe!UnknownFunction
0x00007ff72c2c4e44 UnrealEditor.exe!UnknownFunction
0x00007ff72c2c80fa UnrealEditor.exe!UnknownFunction
0x00007ffc04947374 KERNEL32.DLL!UnknownFunction

2

Hello there @UcanAdamNacix!

Since EXCEPTION_ACCESS_VIOLATION are quite generic errors, there are multiple possible causes for this issue. We can take a few approaches for it:

  • First, open your affected animation blueprint, and recompile it. If the process fails, try using Full Rebuild option.

  • Next, check the specific foot placement node for any invalid or missing connections, look for any red indicators present, and reconnect them. You can also try reseting the node to default values.

  • Now, checking the engine itself, check your UE installation from the Launcher, and apply “Verify” from the dropdown menu, to ensure your install is not missing any elements.

  • Finally, checking the project itself, perform a clear cache, via deleting Intermediate and Binaries folders from your main directory. After that, restart UE, and allow it to rebuild the files.