With Maya 2017 Update 3 comes with the latest Arnold update as well.
Form now on when you click the Create Physical Sky icon Maya creates the necessary nodes and make the connections. Well, almost.
Maybe it’s intentional but the PhysicalSky node is not connected as Background.
You need to add one more line to the existing code.
- Right click on the Create Physical Sky icon -> Edit
- Make sure you have the semicolon (;) at the end of the first line.
- Paste this additional line the after the existing python code
mel.eval('connectAttr -f aiPhysicalSky1.message defaultArnoldRenderOptions.background;')
- Click the Shelves tab -> click Save All Shelves