AddDllDirectory Error - Update Windows 7 / Server 2008 http://go.microsoft.com/fwlink/p/?linkid=217865 (Credit: @xerxes)
I would recommend keeping your Windows up to date though, just do it during the night when you aren't using your PC.
@xerxes I did delete all those files, started the game pressed Unlock all just ONCE,
messagebox in corner popped up telling me everythings unlocked and told me to restart the game.
Restart it, goes to main menu, click on barracks but no, im lvl 1 ?
Did delete those files again and repeated the process now it works!
The game works fine now when server changing map!
Thank you my good Sir! A cookie for you!