If your Maya loadOnce or BatchRender job fails with an error similar to:

    Error: line 1: UnboundLocalError: file /usr/autodesk/maya2017/lib/python2.7/site-packages/maya/app/renderSetup/model/renderSetup.py line 270: local variable 'renderLayer' referenced before assignment

    ...it is possible you are attempting to render a scene file that contains both legacy render layers and contemporary rendersetup layers, which according to Autodesk is unsupported.  To make this combination work you need to add a new Maya environment variable MAYA_ENABLE_LEGACY_RENDER_LAYERS=1 to your workers, or in the job submissions under the expert options.

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