I'm trying to help my son install the SketchyPhysics plugin.
Here's our process...
We installed SU v.8
We downloaded the MAC version of SketchyPhysics (SketchyPhysics3.2-Dec-2(MAC).zip)
We opened the zip file and the folder: SketchyPhysics3.2-Dec-2(MAC) folder showed up on our desktop.
I looked in the SU8 folder hoping to find a PlugIns subfolder, but there are no subfolders. Just "LayOut" "SketchUp" and "StylerBuilder".
I dragged the new folder (SketchyPhysics3.2-Dec-2(MAC)) into the SU8 folder hoping SU would "see" it an install the plugin.

No deal.

We're running Mac OSX 10.5.8

Can anyone take the info I've provided and give us some guidance? Thanks so much.

Peter