[Konstantinos]

pawn Код:

public SaveZones()
{
    new File: file2 = fopen("Altele/gzones.cfg", io_append), coordsstring[128];
    for (new idx; idx != sizeof(ZoneInfo); ++idx)
    {
        format(coordsstring, sizeof(coordsstring), "%s|%f|%f|%f|%f|%d\n", ZoneInfo[idx][zOwner], ZoneInfo[idx][zMinX], ZoneInfo[idx][zMinY], ZoneInfo[idx][zMaxX], ZoneInfo[idx][zMaxY], ZoneInfo[idx][zTeam]);
        if (file2) fwrite(file2, coordsstring);
    }
    if (file2) fclose(file2);
}

EDIT: The problem was the invalid file handle (the file was not opened correctly). Checking if it's valid will solve it.

@S4t3K: Yeah, I noticed that later on and I fixed it.