Problem with mouse events being blocked

I am working on a tower defense game and I have it setup so when you click on a tower button to build it, a image of the tower (movieclip) follows the mouse cursor around. I also have it setup so that any empty tiles you hover over will highlight.

Since I have put this movieclip of the tower to follow around the mouse though, my tile event listeners are being blocked. I tried using mouseEnabled = false; on the tower movieclip, but then it won’t follow the cursor around. Anyone have any ideas for this?