Theres a client update but there is no prigress bar (i didnt code one). It may take a while for the files to load. How long did you wait (and what region are you connecting from)? This update should also occur if you redownload the client. Also make sure fire wall isnt blocking fetchfiles.exe.
it stayed there for a LONG time, dont know how much, but when i wanted to start the game, the moac.exe was an "invalid" win32 application lol, so i started the fetchfiles again and was unresponsive after a while thats when i tried to download the game from the website, but it was downloading at 5-10kb/s for like 10 minutes and then it failed
so, if u could upload the game files to another server/mirror i would be gratefull lol