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Error occurred before the launcher

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Junior Member


Hello, Riot and LoL community.
I'm having this well known problem, but I couldn't find any actually new solutions, because all of them were made in 3.x or early 4.x patches.
So I'm having trouble with even getting to the launcher. When I try to start the League of Legends app, I get this error (http://imgur.com/gpQeWEN).
Before the official mac client I played the one that was made by boompje at his own web, but when the official mac client was released, I think, I had the same problem and it had something to do with the RADS folder, but this time I have tried to delete and modify it in any ways I could find in the old threads, but nothing would help.
Now that I reinstalled my macbook, I'm having the same problem. I hope someone could help me.

MacBook Pro, 13-inch, Late 2011
Processor 2,4 GHz Intel Core i5
Memory 4 GB 1333 MHz DDR3
Graphics Intel HD Graphics 3000 384 MB
Serial Number ..
Software OS X 10.9.4 (13E28)

The computer's installed partition is in Case-Sensitive format.