At first everything seemed to work properly.
I have several objects that set media for a single agent using the llParcelMediaCommandList function.

When I first loaded 1.19.1, I was able to play media just fine through these objects (they have also been thoroughly tested in previous SL versions)

I then tested several parts of the new media functionality, loading a web page, and then showing an image.

I then tried to show a YouTube page, which showed a page, but without the Youtube (since the system uses an older version of flash)

Then I tried to load media through all of the previously working objects.

Thinking that I had somehow screwed up either the quicktime or SL system. I tried the following:
Restarted Quicktime: no effect
Restarted SL: No effect
Restarted my PC: no effect
Then SL restarted the region I was in (I had also tried other regions): Still couldn't get video to play using the same old commands.

I have also tried it with the following simple script (which must be deeded and you must set the texture key on something), but it didn't work either. I did notice that the first attempt after restarting SL would cause the media texture to momentarily flash gray and then switch back to the texture.


default
{
    state_entry()
    {
        llSay(0, "Hello, Avatar!");
    }

    touch_start(integer total_number)
    {
        llParcelMediaCommandList([PARCEL_MEDIA_COMMAND_URL, "http://physics.nku.edu/movies/buggy1.mpg",
                                         PARCEL_MEDIA_COMMAND_TEXTURE, "b694513a-cb6b-e8ce-c529-b473e0afe9f4",
                                         PARCEL_MEDIA_COMMAND_AUTO_ALIGN,TRUE,
                                         PARCEL_MEDIA_COMMAND_PLAY,
                                         PARCEL_MEDIA_COMMAND_LOOP
                                         ] );
                                         
        //llParcelMediaCommandList([PARCEL_MEDIA_COMMAND_URL, "http://physics.nku.edu/movies/buggy1.mpg",
         // PARCEL_MEDIA_COMMAND_TEXTURE, "16adf85f-cbc1-5961-0afc-0ed92c5f718e",
         // PARCEL_MEDIA_COMMAND_AUTO_ALIGN,TRUE,
         // PARCEL_MEDIA_COMMAND_PLAY,
         // PARCEL_MEDIA_COMMAND_LOOP,
         // PARCEL_MEDIA_COMMAND_AGENT,"798164f6-aea8-4e8e-a8e9-80ec0c51f272"] );
    }
}


Also, I started up the Officially released 1.19.0.5 and used the same objects and tests, and everything worked perfectly fine. It was only when using the new RC 1.19.1

Clearing browser cache in preferences, also did not help.
Reinstalling RC1.19.1 over an existing install did not help.
Deleting everything in the RC directory and then installing again, also did help.

The commented part of the code is to test the llParcelMediaCommandList with setting it for a single agent.