Specifying distance for village generation in superflat preset fails to make the world

Make a new world, changing type to Superflat and editing preset from default classic preset to

2;7,2x3,2;1;village(distance=9)

Minecraft will hang on the "Loading World, Converting world" screen indefinitely.

Changing the preset to not use distance/size parameters for villages will work properly.

Distance/size work OK in 1.7.4.