I was looking around, and most of the links I found of the setup or the whole folder were dead, so I'm posting this. This will only work for private servers because I deleted the Maplestory.exe for Nexon. Also, it shamelessly advertises my server with it's client (Actually, I uploaded for a friend, so it was in there).
So here you are, GMS v.55 Folder.
So here you are, GMS v.55 Folder.
You must be registered to see links