Geometry node not duplicating specific object

[Vorsos]

Hello all. I made the simple box skyscraper well enough with geometry nodes. Now I have a more complex object (an apartment layout) that the same node setup refuses to duplicate. I took out a child object (doorknob) and tried a few other things with no result. This new system has little useful documentation; does it break if an object has ngons or something?

Image preview | Dropbox file

[LordoftheFleas]

The object you are instancing is just a simple box:

Maybe you need to apply this geo-node setup to a different base object and use apt unit instead?

[Vorsos]

Thanks for looking! That was the fix. It seems future projects without a separate ground floor object will need some kind of invisible object from which to start replicating.

[LordoftheFleas]

not necessarily, you could ignore the initial geometry path here and just use whatever you generate with the nodes:

I mean, this also works:

But at that point, you could just delete the original geometry in edit mode