I also followed the above after having my "main assets" download freeze at 29%. After updating the launcher, it started downloading, and is now stuck at: Installing Main Assets 100 (0%)
PLEASE FIX YOUR GAME RATHER THAN JUST ADD CRAP TO THE CARTEL MARKET.
Indeed, people always gets this problem after patches. How come you never fix it? You must know the solution since you fix it somehow, but we have to wait for hours, or days.