There is definetly something wrong in the Select node (bypath & bypath dynamic).
If the path is valid (no pink select node) why the output is NULL?
Am I missing something?
Here other example showing NULL output after changing the Select node path.
The keyframe requested is valid, the spread doesn’t contain any NULL slices.
please share the patch and version you are using to make me reproduce this.
I answered you in the chat aswell. So yeah, yesterday I worked on this and shared a patch that tried to repatch your case. And published preview 7-18. Where do you prefer to continue talking?