If other encounter the same issue, could you try the following:
- Instead of starting the Dedicated Server Launcher normally, open a command shell at the same location the launcher is located, and start it with the following command line:
DedicatedServerLauncher1600.exe -steamid 931580
Basically the DSL is compiled with hardcoded values 443030 and 440900 for the server and client ID values, but this command line can be used to override the value (there’s also “-steamidclient” for the client value).
What happened is that the 3.0 TestLive version has a different Steam ID, so when you try to fetch it with the DSL, it will get the old Test Live server, not the 3.0 one.
Until I find an elegant way to solve that, it’s possible to use this manual launch with the override parameter.