UO Second Age

I had this problem too and have been trying for 2 days to get on. Same as above, but not even the ping software fixed it. Figured it now though I think. Login screen allows spaces to be entered, but it then brings up the message shown above. Don't use spaces in the login name and it might work for you too! I noticed that creating an account with the ping software does not allow spaces in the username.

Any chance of filtering the name at the login?

I havn't played UO in 10 years, left soon after Trammel like most others here and never found anything to touch it since.