Sorry, the above was for an old version I was using. For Classic, I have used this (client 7.0.87.11):
<?xml version="1.0"?>
<CEDConfig Version="6">
<Language>..\Language\English.ini</Language>
<Port>2597</Port>
<Map>
<Map>C:\Program Files (x86)\Electronic Arts\Ultima Online...
other the directories differences, I have this:
<Port>2597</Port>
<Prefix>0</Prefix>
<Format>0x00000000</Format>
My batch to start server:
cmd /k C:\UOBin\CentrED+\PEBinaries\cedserver.exe map0.xml
Only other guess would be client or server cant find the mul files.