You try to use the Skin Preview tool > it injects (lets call it like that) on the first (Launch) client and your game pretty much won't start.ġ) Close the Launch client before opening the tool.Ģ) Make sure you don't click 'Launch' as fast as possible because that will make it cache as a process. The Launch one sometimes doesn't fully close (the process) so you have to pretty much terminate it with Task Manager (be careful not to terminate the second login client cuz you'll have to re-open League). When you click the 'Launch' button, another client popups (login one). For those people whose game won't start, here's what occurs the problem and how to fix it.