Startup error after downloading the game 1: %1

[armagash 5]

Good afternoon, after downloading the game and updating it. Ask to do this function over and over again. After that it stays when starting the update and ends up giving an error after a while that does not advance saying this text:
"Error when starting tha game! 1:% 1 is not a valid Win32 application"

Any idea?

[TheAlmighty 1,100]

Hello, 
Try going to the settings on the launcher and switching 32/64bit client.