[eluser]orotone[/eluser]
I'm having this same problem and searched here before posting. With form validation on 1.7 if I don't have a rule then the set_value and set_radio form helpers do not work (I've not tried the set_checkbox and other helpers, but they probably don't work with validation either). I can set a rule on all the set_value fields if that's the work-around, but what rule can I use for a radio since I don't require it to be set? Any ideas about a better work-around, etc. would be much appreciated. I'm using 1.7 SVN.