So I'm stuck with this dilemma, my terrain wont load on the map editor list, the icon of a jigsaw indicating that the addon is loaded is present. No error's occur when I pack the map using addon builder nor with PBO manager or when I launch the game, I've also check if the contents within the .pbo are there using pbomanager, I'm pretty sure that the reason why it's not working is due to the config. Every thing worked using Captn CAPS config, however I noticed that there was a black horrizon on the terrain to which I think is due to the config being out of date.
So I had taken the one out a3\maps_altis and edited the config where necessary. I think the reason why I had the black horizon/sky/cloud thing was due to an recent arma update as I'm aware that the CUP and other terrains had this problem due to an update, so anyways that's why I changed the config.
So yeah I'm pretty sure it has some thing to do with config, Id appreciate the help!, here is the paste bin. http://pastebin.com/w5XSj1yY
Note there were errors when I first edited the new config out of a3/maps_altis and launched it, however an error poped up with some thing to do with "cfg worlds" and line 4733, it had stated that there was a missing "}", also that line had the line #include cfgSurfaces.h, just to let you know.