Adobe reader XI no longer plays video or audio embedded in PDF created with Adobe Acrobat X Pro.

Help please!
Embedded video and audio content in PDFs created using Adobe Acrobat X Pro does NOT play on some school computers after Acrobat Reader XI is installed. The media content played fine with Acrobat X. This is seen with both XP and Windows 7 machines.
Bizarrely, other machines with Windows 7 and XP play the video and audio content fine when Acrobat XI is installed.
Please help, as the PDFs are the delivery mechanism for a very effective literacy programme for children, and this bug has halted delivery for a considerable number of schools and thousands of children are in trouble!

Hi Raman,
I think we have found the source of the problem. It relates to how different browsers are detected by Adobe when updating Flash Player.
To make the videos play within PDFs either from DVD or on the hard drive, it is now essential that Adobe Flash Player 11 Plugin (now version 11.5.502.113) is installed. (Adobe Reader 10 had its own internal flash player, so an external player was not needed)
We have discovered that, when Google Chrome is the browser, automatic updates of Flash do NOT download this programme. Flash 11 ActiveX is the only programme that is downloaded, and the videos do NOT play from DVD or harddrive.
Also, it is not possible to manually download Adobe Flash Player 11 Plugin as this option is not presented to the user. Presumably Adobe have set it up this way, because the Adobe site recognises Chrome is being used, and assumes that the computer does not need the plugin flash player, as Chrome has its own internal flash player. However, other programmes may need it!
We went to FileHippo to download the non-IE version (even though we were using Chrome!) at
http://www.filehippo.com/download_flashplayer_firefox/
Then the videos played from DVD or harddrive.
I have not been able to test how this works with other browsers. I hope that Adobe can sort this problem out asap!
regards
Buffy

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Adobe reader XI no longer plays video or audio embedded in PDF created with Adobe Acrobat X Pro.

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