Arrange: Error: Cannot get the geometries for the selected component: .... A planar face is required to be arranged.

[allister_mcrae]

Here's a good one.

This file is split using 4 planes. So there are flat surfaces.  I had this error on another part as well and was able to fix that by a tiny move of a t-spline back in the timeline. (I'd noticed an odd artifact of one of the hole fill options created a split in the original t-spline - but not its attached mirror. Resolved that by changing hole fill type).

I've tried splitting in both manufacturing and in the design workspaces.

This has been working on bodies that have been copied from their original Components into a separate sub-component for splitting (subbed off the root).

Its always the center-right half as you look at this image that causes the issue.  Sometimes, the center-left half.  The outsides work fine.

I was able to get this to split and arrange properly after crating the t-spline in the timeline - but not after doing all the body work to attach its attachment blocking and put a hole through it. 

EDIT: No longer able to get that function to happen immediately after T-Spline creation in timeline.  Same error for all parts.

The cut-away looks pretty planar to me.

Am I just asking Fusion to do too much math?

Thanks!

[allister_mcrae]

So I got it to "work" by offsetting the first plane from center .1cm.  Naturally, this won't do.  But the arrange is kinda goofy, too.

[allister_mcrae · Accepted solution]

...Tested another sketch downstream from this that wasn't linked to this component in any way (that I know of).  After rebuilding the whole piece. It had some yellow lines left over from the aforementioned repair of the fill hole command for this alternate t-spline body.  (third one down).

Moral of the story: If you see yellow.  Fix it. It is affecting things outside the scope of what you perceive as being connected to a component. I was fixing that because it was already working even though it used the same process for design and was at least as complex.

🤦‍