i encounter exactly the same problem, however i am a new player (about a week or so) and its my first time i meet this problem! i dont know what to do because, while i click the game to open and the patch automatically initiates its downloading proccess, the blue loading bar stucks at about1/4 of its total length! the only messege i am able to receive is the following( but again, having no idia what to do with this...)
Application folder:
C:/Users/ΘΑΝΟΣ/AppData/Local/Temp/Rar$EXa0.099/PROClient
There should be 'PROClient_Data'
folder next to the executable