I can see that this issue has been addressed many times over, but the suggested solutions I've followed aren't helping.
First my system:
iMac running Snow Leopard (10.6.8)
I'm using Firefox 18.0
What I've done so far:
Uninstalled previous versions of Flash Player
Checked the Library to delete any related Flash files (there weren't any)
Downloaded the new Player installer (several times)
Rebooted the computer (more than once)
Looked in the Contents>Resources folders for the Adobe Flash Player.pkg ... it wasn't there
Allowed add-ons from Adobe
Looked in Preferences to enable any plug-ins or add-ons that might be related (didn't any).
I'd very much appreciate pointers to the next thing I should try.
Retrieving data ...