[Haskell-cafe] haddock-2.3.0 error: file name does not match module name

I'm getting an error when I run setup haddock-2.3.0 on the Takusen src: haddock.exe: File name does not match module name: Saw: `Main' Expected: `Database.Enumerator' I assume that it's procesing file Database.Enumerator.lhs when it emits this, but I'm puzzled because the module name in Database.Enumerator.lhs is certainly Database.Enumerator, and not Main. Or am I looking in the wrong place? Alistair