The hunspell man pages and docs describe what can be used in an aff file. It was hunspell that added the iconv and oconv features. Before the chararacter conversions on input is an iconv number that tells how many iconv patterns follow it. If you remove one of the iconv pattern lines, you need to decrement that line count. Also if you edit the aff in the wrong encoding, you can mess it up.
Here is a good hunspell man page I found online that describes the contents of the aff file and its meaning:
http://manpages.ubuntu.com/manpages/...unspell.4.html
I will take a look at the dictionary and see why removing that line seems to help.
Thanks,
KevinH