What steps will reproduce the problem?
1. Be a resto druid with the wild growth spell
2. Have your current target be a dead party member or a mob (like a dead mob you just looted - I can't recall with 100% certainty at the moment if this error has occured while targeting a live mob, but I believe it has)
3. Try casting your wild growth on a living party member (by hovering over the live party member's box and clicking your bound wild growth mouse button)

What is the expected output? What do you see instead?
   Wild growth is suppose to cast on the person whose box you are hovering over/clicking on.  However, the spell ends up not casting at all and you get the error message that your target is dead.  This problem has only started happening since the 3.1 patch. If you switch your target to a live party member, even one you're not casting the spell on, the spell will work again.

What version of the product are you using?
   SmartDebuff v3.0dDev1

Do you have an error log of what happened?
   No apparent error log per se, just the error message that Target is Dead

Please provide any additional information below.
   So far in my experience since patch, Wild Growth seems to be the only spell thus affected, however, I have not had a chance (yet) to see if Circle of Healing would have a similar problem