I have exactly the same on mine, I can see all cams , start and stop and auto start cam.
I am in the middle of installing the Dream Elite 7.1 image again and starting again, 9th time lucky lol.
Thanks mate you have been helpful, will let you know how I get on.
Hey dan20701 - You realized that /etc/tuxbox/config (in all other Images i used yet) is not the same like /var/tuxbox/config ? I need some time too, but now everything works fine 
