This also happens if you create a ReadGeo node via the script-command entry - 
the alembic reader doesn't get initialized properly.
I haven't looked at it yet but I'd take a peek at the python code that's bound 
to the 'ReadGeo' menu item - there's clearly something additional being done 
after the file browser is closed.

-jonathan

On Jul 16, 2013, at 5:48 PM, nukepython.cali...@neverbox.com wrote:

> My first attempt to create a ReadGeo node looked like this:
> 
> n = nuke.createNode('ReadGeo2')
> n['file'].setValue('alembicFile.abc')
> 
> However, when I set the file knob, I would get a popup dialog that would ask 
> the user if they wanted to "Create all-in-one node" or "Create parents as 
> separate nodes".
> 
> Wishing to avoid this pop-up dialog, I then tried:
> 
> nuke.createNode('ReadGeo2', 'file {alembicFile.abc}')
> 
> This would, indeed avoid the dialog... but it seems the dialog is essential, 
> as the ReadGeo node would not show all the nodes contained in my alembic file 
> (it would only show one of four objects in a hierarchical structure).
> 
> So... does anyone know what exactly this popup dialog is doing, or how to 
> recreate it's effects without requiring user interaction?
> 
> Thanks,
>  - Paul
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