when i load the water world preset on customised worlds it chraches

when i load the water world preset on customised worlds it chraches

What I expected to happen was that the world just loaded normally

What actually happened was that my minecraft chrashed
(i'm sorry for the spelling...)

1. i open minecraft 1.8.1 after i just changed version from 1.7.2
2. create new world
3. gamemode creative
4. more world options
5. world type customised
6. customise
7. presets
8. klick water world
9. use preset
10. done
11. done
12. create world
and i named the world 'test' if that helps