Going to Tools>Addon>, when I select the PlugIns tab, none are listed. At the top of the screen is the message: TenFourFox does not accept Plugins. They are disabled by default."
Weird. You had it installed and working at one point, didn't you? Enter "about:config" in the address bar of TenFourFox and check that...
1) "enabled.flash player.plugin" is set to "true"
2) "show_plugins_in_list" is set to "true"
?) quite possibly something else that I'm not thinking of...
her is how to enable flash player in TenFourFox 6 Set
tenfourfox.plugins.enabled to
true in about:config.
I don't have that line in my config menu, but look for that too. Maybe it's something that started with TenFourFox 6 (I'm using 5).
Is Flash working in Safari? If it is, that narrows it down to something that needs to be adjusted with TenFourFox.
If it's not working in Safari, and just to clarify, when you double-clicked on the installer, did you get this:
Did everything seem to go okay with the install?
Which is correct? And should I run 'Uninstall" before installing one of these?
The DMG is the correct one. It might not hurt to run the uninstaller again just to be sure.
I'm heading to Dragon Con until Tuesday. If this post isn't helpful, hopefully someone else can help you figure it out. My feeling is that there must be something very simple that we are either overlooking or miscommunicating to each other. A 1.7 GHz machine running Leopard should be able to do what you are trying to do here.
If needed, here are links to a few more revisions of 10 and 10.1:
http://fpdownload.macromedia.com/get/flashplayer/installers/archive/fp10.1_archive.zip (10_1r53_64 and 10_1r82_76)
http://fpdownload.macromedia.com/get/flashplayer/installers/archive/fp10_archive.zip
FWIW, I'm using 10r3218.