No, no you didn't, not fully.
Some perhaps, but you missed a very important step that gives us much more detail.
Also, if you're hosting a server, you'll need to check your server logs, not your client logs, for errors when adding players and/or ending/starting the server.
I'd be surprised if there wasn't some error somewhere.
Make sure you've got both ULib and ULX from
www.ulyssesmod.net if you haven't.
We've no idea what others might have done to hack code that would cause this type of issue if you've gotten it from somewhere else.