Creative flat world under water?

I'm making a minecraft FLAT creative server. and for some reason the whole world is just water. Heres my server properties. Am I doing something wrong?



generator-settings=
allow-nether=false
level-name=World
enable-query=false
allow-flight=false
server-port=25565
level-type=FLAT
enable-rcon=false
force-gamemode=false
level-seed=
server-ip=
max-build-height=256
spawn-npcs=false
white-list=false
spawn-animals=false
texture-pack=
snooper-enabled=true
hardcore=false
online-mode=true
pvp=false
difficulty=2
server-name=Unknown Server
gamemode=1
max-players=50
spawn-monsters=false
view-distance=10
generate-structures=true
spawn-protection=16
motd=