I just got the new UO and now after I loaded it when I try to play MP I get this message. I also cannot download anny files....can any one help?
First of, have you downloaded any other mods/skins/etc? Foreign PK3 files can interfere when trying to join a pure server.
What do you mean you can't download any files? Do you mean the autodownload when you join a server that is running a file you don't have or what?
Have you modifed the original pk3 files (pak00, pak001, etc)? The server won't let you on if you have.
Autodownloading must be disabled if you can't download files. Filter only pure servers using the filter to search only pure servers. Pure servers are servers not running any mods, so you shouldn't have to download anything. If the error continues to appear, try reinstalling the game.
PS. Does the same thing happen when you try joining Original Call of Duty servers?