Weird lux bug self deleting files

Basically this weird bug with lux, played with a guy who played with the elemtal lux skin, nothing happened, and next game, played with him again, and it gave me bugsplat "The asset LUXwater was not found, try unninstalling league" in mid game. When i tried reconnect it always throwed me out saying luxwater is missing. Tried reinstalling the game, i went into custom game with friend who has the elemental lux skin, first game he played without it, all good nothing, second game he applied the lux element skin, bum. LuxWater missing, file deleted itself from C:games:riotgames:leagueoflegends. I also probably got afk punishment because i couldnt reconnect into my game becuase of this self deleting files bug. thanks if that happens btw...