Firefox freezes while trying to download embedded media via Flashgot while Tor is enabled

Question

I have both plugins of Flashgot (1.2.8.2) and Tor button (1.2.5). For example, I want to grab a video from Youtube (while the video is running) using Flashgot while Tor is enabled, Firefox will freeze but the download is not progressing and window cannot be closed. I have to kill the firefox.exe process to reactivate it. I am using Windows 7 Ultimate.
This does not happen when Tor is disabled. So there might be some conflicts between Flashgot and Tor plugins. But hopefully, firefox team can help to get around with it. TIA!

Answer 1

There has been a change in where Firefox searches for plugins and the plugins folder in the Firefox program folder is no longer scanned for plugins, so Firefox won't find them anymore if they are installed in the plugins folder instead of the "browser\plugins" folder that Firefox now scans.
You can set the plugins.load_appdir_plugins pref to true on the about:config page to make Firefox scan the "<install>/plugins/" directory for plugins like the WMP plugin (np-mswmp.dll).
You can alternatively move plugins from "<install directory>\plugins\" to "<install directory>\browser\plugins\" (create this folder when missing) to make Firefox find them again.
*http://www.ghacks.net/2013/05/15/why-you-may-have-lost-access-to-plugins-or-extensions-in-firefox-21/
*http://mike.kaply.com/2013/04/24/major-changes-coming-in-firefox-21/
*https://support.mozilla.org/kb/windows-media-or-other-plugins-stopped-working
*[http://www.flatplanet.tv/שידור-חי/ערוץ-1]