Cannot install OX

[Sakofe]

No
Windows 7
Internet Explorer 9
Retro Uprising - Arcade - Final Fantasy 6 Retranslated And Improved
ArcadeOX, both modes
No
The prompt shows but it doesn't give me the notice(like the yes or no option) when I run the installation.

[Kong]

In IE press Alt to pull up the file menu.
Select Tools > Manage add-ons.
Change "Show" to All add-ons.
Is ArcadeOX listed?

If yes, what version?
If no, then when you click the link that says "ArcadeOX Score Mode" what happens? You should see a bar at the top of the browser that asks if you want to allow it.