The build of Hunspell 1.3.2 at http://sourceforge.net/projects/ezwinports/files/ from doesn't output the "LOADED DICTIONARY:" section when "hunspell -D" is run.  I don't know if this is a bug in hunspell, or in the build, or if this feature is missing on Windows, or if there is some other reason.

In any case, this missing section confuses function ispell-find-hunspell-dictionaries in Emacs 24.4 (I'm using the build at http://sourceforge.net/projects/emacs-bin/files/releases/emacs-24.4-bin-i686-pc-mingw32.7z/download).  Variable hunspell-default-dict never gets set, meaning function ispell-parse-hunspell-affix-file ends up being called with a nil argument and erroring.

The attached patch gets things working again for me, although I must admit I don't understand the implications of not detecting a default dictionary.

If this patch is used, I believe that I will need to sign legal papers before patches from me can be accepted.  I am happy to do so.

-- 
Peter Oliver