_UNKNOWN_REFERENCE_NODE_

[Daniel]

Hi,

I was wondering the _UNKNOWN_REFERENCE_NODE_ gets created. The node is usually attached to other reference nodes and I could delete it or filter it by using maya.cmds.ls(references=True) but I cannot reconstruct how the node gets created. Same goes for the sharedReferenceNode.

Any input on this is highly appreciated.

Thanks,

Daniel

[likage]

It is possible that your scene is using broken reference, references that have been deleted/renamed etc...

[Daniel]

All references are working fine. Theres no errors in the scene yet I do have the 'special' reference nodes. As I said: I can work around the nodes but I am curious about how they get created.

From the maya cmds ls docs:

references(rf)

	boolean
List references associated with files. Excludes special reference nodes such as the sharedReferenceNode and unknown reference nodes.

[Daniel]

http://help.autodesk.com/view/MAYAUL/2017/ENU/?guid=GUID-A517002F-9B10-4AD2-8848-AB233E2B559F

thats all I can find but I definitely don`t have any references from Maya 6.5 or prior in the scene.

[Neil Roche]

It might be where a reference file has a node from a plug-in which the file that contains the reference doesn't have.  The file still has to create a node but as it doesn't have access to the plug-in it creates this UNKNOWN_REFERENCE_NODE instead.

[Daniel]

Hi Neil,

thats exactly it and it lets me recreate the issue. Thanks. Do you know on how to create sharedReference node aswell?

Thanks,

Daniel

[Daniel]

If anyone is interested: sharedReference nodes only get created when the flag "sharedNodes" (with 'displayLayers', 'shadingNetworks', 'renderLayersByName', or 'renderLayersById') and the references use the same data.