Getting stuck at 36% then getting the "The launcher has experienced an error. Please restart this application." error. Ran the patcher log and found this error in it:
04/26/2011 13:14 [ERROR] Unable to verify source for expansion [C:\Program Files\League of Legends\Air\assets\locale\resources-en_US.swf]
Not really sure what to do next, really do not want to reinstall the whole game.
Sounds like you need this link
Run it It should save your day.
Yep tried it too, runs the fix and installs and replaces the file but I still get the same error when I relaunch.
Manually Fixed it myself uses the files from the server, seems liked it worked.
Hopefully Wh1terain Riot will give you some RP or something for all the help you've done today.
© 2013 Riot Games, Inc. All rights reserved. Riot Games, League of Legends and PvP.net are trademarks, services marks, or registered trademarks of Riot Games, Inc.