this is tha pag:
www.blogoso.it/jomsocial.html
actually a have unistalled jvideodirect.. next step unistall jomsocial and reinstall all again..
note that the problem of black colour occurs every time I upload a video.
*UPDATE*: I reinstall jvideodirect and Jomsocial. I configured Jomsocial without uploading videos. I set jvideodirect not integrated with jomsocial; well, so there were no conflicts.
Then, I set jvideodirect with integration to Jomsocial, in this case when I upload a video, Jomsocial pages change color to black and various modules of Jomsocial and joomla change position.
to restore the correct aspect to Jomsocial, I removed the video from the database
If you want, i give e user and psw for my site for testing or control.