This follows on from my earlier post about replacing a camera.
Anyway I managed to get the new camera up in xeoma by ip address and password, and when I view all 4 cameras in a 2x2 view, there is a message on the new camera saying No connection: wrong IP or PORT. Also there is a warning message at the bottom of the view saying the stream for preview does not work! Continuous recording from the archive stream is currently engaged.
The Port is the same as for the other 3 cameras: port 80, and the IP address is correct. When I click on the new camera picture (black) it opens up in a quick settings page/window, and there is a picture or video of what the camera sees. Also the new Hikvision camera shows a preview or live view in IE, so it does work fine.