Strange problem - video won't play in a pdf

Hi all!
I regularly create interactive pdfs with videos using LaTeX. This has worked nice before. However, lately I cannot play videos. Clicking a video window yields no reaction (except from crushing AR sometimes). This happens on win7 platform with AR X and XI. However, the same file works on a mac, ever since I've instaled the latest AR and flash player.
Now, here's a funny thing - if a video file is moved from it's relative path, the thing actually works! Clicking the window results with a warning and an option to browse for a replacement file. Choosing whatever video file (including the intended one) results with a video being played as it was supposed to!
Anyone?

Regarding Acrobat Reader XI, http://helpx.adobe.com/acrobat/using/flash-player-needed-acrobat-reader.html
"Adobe Reader and Acrobat no longer include Flash Player and features that require Flash now leverage the machine’s local copy of Flash."
"Note that the Flash Active X component is not enough to display this content. A full Flash player must be installed."
I find that really weird because on that same page they give a link to Flash Player installs for IT, which required me to apply for a distribution license, after which I received a download link for .exe and .msi downloads. Adobe says not to provide that link, so if you want to go to that page you also need to apply for a distribution license (free, took maybe 30 min). However both of the download options of .exe and .msi were active x installers... install_flash_player_12_active_x.exe and install_flash_player_12_active_x.msi.
So basically, Adobe explains the problem of requiring an additional Flash Player install to get Flash to play back in Reader but they specify that it cannot be done with an active x installer. But the link they provide for IT only gives the option to download active x installers. I already submitted feedback for that webpage but that doesn't help me for now. I don't want to try to distribute the normal flash installer because I don't want to end up with a bunch of computers with the Google Toolbar installed and an annoying automatic updater which prompts users to update but then denies them the ability to update with admin privileges.

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