If it segfaults for you, then I want that world. It means the MCA import is not working correctly (which it should).
Oh, and you don't need the level.dat file at all, MCServer only writes that file so that external tools, such as Minutor, work with the world. MCServer itself uses only the world.ini file.
Oh, and you don't need the level.dat file at all, MCServer only writes that file so that external tools, such as Minutor, work with the world. MCServer itself uses only the world.ini file.