Posted to uoherald.com:
Black Screen In KR?
Jeremy Dalberg
20 Nov 2007 21:20:20
If your KR client is set to start in full screen, you may see a completely black screen with an error about a software renderer. We're working on the fix for this, but in the meantime, use the following workaround to get into windowed mode:
Go into "My Documents", "EA Games", "Ultima Online", "User Data" and open the usersettings.xml file in a text editor.
In the first line under "Graphics", change fullscreen="true" to fullscreen="false", then save the file.
That should get you going until we can patch out a fix. (Also, the no sound issue? That'll get fixed shortly as well!)