I get no error messages.

It seems to be related to changes in form...
Oh, F*** me, I see the problem now.

When I change forms, my icon/tool bar also changes, and therefore the function that my hot key does ALSO changes. I hadn't put my target macro in the same spot for the other druid forms yet.

I'm not sure how or even if that applies as well to the worgen form, I'll have to finish up the quest line to get to the point of being able to change at will to verify.