I've been a long time KC supporter and had that same issue creep up on me last night. This is my first bug ever experienced with KC.

Found out that it was only passing a handful of keys. And unfortunately not the ones I wanted

Tried everything, deleted my DNP list, redefined my regions. Reset computer, KC, WoW's nothing.

Finally I uninstalled *deleted* Keyclone. Downloaded the LATEST version v1.8i, re did my regions, DNP list, commands and bam in 5 minutes I was back up and running like nothing was wrong.

So if all above fails you give the delete and recreate method a try Worked for me