hello i find a way
1st) you have to rename your mane folder as gamecoast
2nd) you have to open your rename folder (gamecoast) and inside there create a folder with the name <essence>
3rd)put inside your old essence clied in the essence folder
4) run the luncher and on the selection folder it will give you the path that the file will folow too install , you will chose the folder gamecoast you just create , but when you do this you will see it will have tow gamecoast . it will be like this /gamecoast/gamecoast you should delete the 1st gamecoast and click install
5) when the lancher start you will have to choose l2 essence and just play .
i hope i help you
