Appreciate help with unexpected split body error

[t.g.mandel]

I am working on a project where I have successfully split bodies.

I am getting an error on this one, and am not sure why.

It is a body, and a copy of a component, but again I am sure I have done this before successfully.

Any help or insights are welcomed.

Here are two screenshots, in case the issue is obvious.

[g-andresen]

Hi,

Please share the file for reply.

File > export > save as f3d on local drive  > attach to post.

günther