Problem:

Flash content does not appear, the NetroMedia player is blank with no controls or displays errors such as "301: Unable to load plugin: unable to load plugin 'controls', url: 'flowplayer.controls-3.2.5.swf'", or Flash video will not function properly.

Solution:

If RealPlayer is installed on your system, please disable the RealPlayer Browser Record plug-in.

Here's how:

1. Launch RealPlayer
2. Click the RealPlayer icon in the upper left corner of the window and choose Preferences.
3. Choose Download &Recording from the left hand panel
4. Uncheck "Enable Web Download &Recording for these installed browsers"
5. Click OK and close RealPlayer
6. Restart Firefox