Hi,
You might be onto something here.
I also have nested skeletal meshes and I am running into the crash when I turn on “Hardware Raytracing”, exact error you are showing as well.
I have the “Set Leader Pose Component” node on my construction script. As you can see in the screenshot below, I unlinked the nodes when I took the screenshot.
As soon as I connect that sequence into the nodes that flow into the “Set Leader Pose Component” and hit the Compile Button, I instantly get the crash.
So I think it might possibly have to do with the “Set Leader Pose Component” node like you suggested (not agreeing with GPUSkinCache).
NOTE: Everything works fine if I turn off Hardware Raytracing
If anybody has a workaround, please let us know. I need hardware RT so I can use GPULightMass and I cannot do it because it crashes out when I turn it on.
Hope this helps.
EDIT: Using UE 5.4.2