Daniel T.  said:  Brian- you're right, found this out the hard way. Since I couldn't get the lights to move in alternating phases, I thought a single multi-part object on the dynamic lighting layer could rotate and block two opposing 90 degree wide parts of the lighthouse beacon enclosure. That said, it's not impossible to get the  result  of what you would expect from rotating a DL path. You simply have to create a new path with each point in the path rotated around the path's center. Aaron posted a pretty short snippet of code a while ago to accomplish that for rectangles and polylines, but I'm not sure if he's hung onto it (I know I haven't) and I don't recall what thread it was in. Maybe he'll reproduce it for you. =P  If you're trying to get light cones emitting from opposite ends of a token, you could duplicate the token and flip the second vertically, then rotate it 180 degrees relative to the original. Give them the same light angle, and you've got your beacon.