Unfortunately, when I double-click on the video I still get the same error message about needing Shockwave Player 11. This disk image has a Shockwave installer but it installs version 12.24.r194 of the plugin. Click OK to download it.' When I click on OK, Safari opens and I downloaded the file Shockwave_Installer_Full_64bit.dmg. When I double-click on the video, I get a message saying, 'Application Error This application requires Shockwave Player 11, which can not be found. I also have a MacBook Air 11' Mid 2012 (MBA11) running OS X 10.11.6 and I need to play the video on this computer too.

The file /Library/Internet Plug-Ins/ugin has a creation date of Augand a version number of 11.6.6r636. I have a MacBook Air 13' Mid 2012 (MBA13) running OS X 10.11.6 on which I'd installed Shockwave a long time ago. I presume this is a player application but I don't know if I'm using the terminology correct. Get info says that the video is an 'Application' and the version number is 11.5.0r593 copyright Adobe Systems, Inc. The icon of the video I'm trying to play has a black square with the letters 'Di' centered in it.

Adobe shockwave version 11 download