Unless I'm missing something, it appears that smart-res may be broken as of the 4.2 patch.
Also, I have a macro that looks like this.
I click on it and nothing happens. No target is selected and rez doesn't go off. I select a target and click and still nothing actually happens. Using the regular spell on my quick bar works fine. Am I doing something wrong? Or do you think using the word "cast" may actually interfere with other add-ons etc?