Alright, so I have some problems with the modded terrains.
After reinstalling the game and updating it to the latest version ( July 2013 ) to solve some plane texture problems, I extracted the mods into the mod folder as I should, and everything works fine,except for the terrains. The game can't find the modded terrains in single mission mode, but it finds it in campaign mode that takes place on that terrain and it loads up with no problems. Previously, when I ran the game on the older version, the game was able to find the terrains in both single mission and campaign mode.
I'm less familiar with SF2 modding, and I ran out of ideas to solve this problem. So I humbly ask you people for an advice or two.
Thanks in advance.