David,
Honest, I searched, my Mac and the forums...
Where does PM store the stationary pad files I've saved. I want to transfer them from a backed up hard drive to a cleanly installed new drive.
Are you referring to your saved snapshots (lightning bolt button)? Or when you use the Save button?
For snapshots, if you hold down the "modifier key" (Shift on Windows, Option on Mac) and choose one of your snapshots, an OS window will come forward showing your snapshot.
If you're referring to files saved via the Save button, then you'll have to find them yourself. They're saved wherever you saved them via the file chooser dialog appeared. That could be in a single place or in dozens of places depending on your choices.
-Kirk