If you press the macro multiple times, I suppose it might. It would depend on the cooldown timers and which abilities trigger the GCD.
Well there is my answer. I didn't even know I had Quartz, must have been part of the package that I DL'd. Thank you...This timer was driving me nuts. And the macro works fine with spamming with the exception of the config window popping up in my screen. I did however figure out that having the multiple cast/stopcasting lines in there caused the window to pop up. Once I removed the 2nd cast/stopcasting pair, no more pop window. Thanks for you help guys =)