I was lucky enough to find both an OMD and an FL300R at the same time in order to qualify for the rebate. Actually, the rebate for May is pretty meaningless since the camera is not easily available, and when it is, the flash may not be available. The flash does not work on my OMD. It simply refuses to be identified with the camera. On the other hand, the same flash operates perfectly with other Olympus cameras we tried out at the store and the larger 600R works perfectly fine on my OMD. Therefore, the camera flash pins are fine and the 300R easily identifies with the other Olympus cameras. My dealer, who has a lot of experience with Olympus cameras and flashes, finds the whole thing very strange but has had only 2 OMD's in so far, sold immediately, and only the one FL300R on hand, so very little experience. He has ordered another 300R and we will see what happens. I am hoping the Olympus has not made a mistake by mating a rebate flash with a camera for which it is presently incompatible. Does anyone else have experience with this?