the 1st time you start the launcher installer it just create the empty folder, then you start again and the install will start... stupid but if the bugs are limited to that, it'll be fine
don't change the numbers key binds, you are not able to bind them again
as a european I had to rebind the WQSD as ZQSD, but when I tried to switch weapon skill and relics uses with weapon changes 1, 2, 3; I couldn't rebind the 1, 2 & 3 keys...