Re-instance

[voltron7]

Try this one...I'm not the one that wrote/made this, I think it was from scriptspot.
Used countless times, it has been an integral part of workflow for most jobs.

macroScript instancer
category:"Tools"
toolTip:"Instancer"
buttonText:"Instancer"
(
on isEnabled return (selection.count == 1)
on execute do try(instanceReplace selection[1] (pickObject message:"Pick instance source"))catch()
)