I just did a fresh install of CMS 1.8.1 and successfully added a display to it. However, I have two other machines that I cannot add to the CMS. When I try I get an error message in the Player options that says “There has been an unknown error with XMDS, it has been logged. please contact your administrator.”
Hmm - OK, in your configured library folder, do you have a file called config.xml? If so, inside that file will be the same string mentioned previously. Can you change that too?
It worked! Upon changing the library file to match the install folder file the display added without a hitch. For some reason the code in the library folder was written as <DisplayName /> instead of <DisplayName>COMPUTERNAME</DisplayName>.
There’s a couple other things like that in there too though. <LogToDiskLocation />, <ShellCommandAllowList />, <SplashOverride />, and <Commands />.
(I added in the space after the “<” in those examples so that they would show up in the reply. But the second space before the “/>” is actually in the config file.
EDIT: i’ve used backticks to format those bits properly
It is safe for those other settings to be empty - display name being empty is really odd though, it should have tried to substitute COMPUTERNAME with your actual computer name, and I can only assume it couldn’t get that for some reason.