These are the manual steps needed to create an image based lighting setup that is compatible with HDR Light Studio.
When HDR Light Studio creates an IBL Hook for you, it generates this setup.
In the Render Setup panel for Corona, ensure the Scene Environment is set to Use 3ds Max settings
Go to menu Rendering > Environment…
Enable Use map check box and click on the Environment Map: None button
Choose a CoronaBitmap and then a HDRI map file to use as a temp stand in for now.
HDR Light Studio will now see and connect to this IBL setup.