If you can not download the files from the server it means;
1) Your hard-drive is so full it can't fit the custom stuff we have in the server
2) Your internet connection has hiccups that drop the download
3) The server has a script failure that prevents anyone from downloading (which isn't the case as players are online and playing)
However, if you do finish the download, the server won't kick you out just because you are not logged in, I think there's a limit of 3 attempts to login before you get kicked.
You can also try and navigate to your ".../AppData/Roaming/VCMP/04beta/store/178.62.228.75-8192/" and removing all files from there to allow the client to re-download the newest files from the server directly.