After downloading the client, I started the launcher and waited while it began to update. After reaching 7/8 and whatever that signifies, the launcher closed and failed to restart. I clicked my LoL icon again and received this error message:
lol.launcher.exe - Entry Point Not Found
The procedure entry point MaestroServerController_RegisterHwnd
could not be located in the dynamic link library launcher.maestro.dll.
Clicking on on the error message then gave me a Windows message saying:
League of Legends skinned.launcher has stopped working
A problem caused the problem to stop working correctly.
Windows will close the program and notify you if a solution is available.
I've downloaded the client twice now, once from Steam and then from the LoL site.