> # Turn off PREVIEW visibility of "Grouping 1" grouping box, assumed to be present in the scene.

to avoid script crashes You should never assume something is present in the scene.

You could use the following options to test for it before attempting to do anything with it.

option 1:

try:
    scene.SelectActor(scene.Actor("Grouping 1"))
    actor = scene.ActorByInternalName("Grouping 1")
   ... rest of script
except:
    pass

option 2:

if scene.Actor( "Grouping 1" ):
    scene.SelectActor(scene.Actor("Grouping 1"))
    actor = scene.ActorByInternalName("Grouping 1")
    ... rest of script

Locked Out

Forum: Poser Python Scripting

Subject: Turn off all DisplayOrigin points in a scene, at once?