Does Youtube give you a list of headings when you click on a category? (the clips themselves may not play though - mine don't).
Did you put your line in CCcam? If so, look in Menu > network local setting > camds setup > CCcam client setup > manage config files > CCcam.cfg. Your line should have a green tick next to it & show "online".
If it doesn't have a tick, press OK to tick it, then press the back button to save it. Restart the box.