i had problems back in the day setting mine up... want some help?
what are the steps you took to set up?
create a folder on your desktop, place cedserver (application) into that folder.
Go to your Ultima Online CLIENT folder (program files>ea games> etc.)
COPY FROM CLIENT:
map0.mul
radarcol.mul
staidx0.mul
statics0.mul
tiledata.mul
TO DESKTOP FOLDER, that you made for CenterED.
thats a piece of what you need to do; the next step, is telling me which client (SE, ML, SA, etc.)/
patch #. so we can figure out which map size you will be using...