On my brand new Nikon D200, I have a problem with the MB-D200 battery pack grip. There seems to be some communication/power problem between the grip and the camera. Here are the symptoms: 1) when using the EN-EL3e battery alone in the camera (no MB-D200 grip attached), the camera seems to work fine. 2) when using AA alkaline batteries in the MB-D200 grip, it can autofocus normally, but after I take one shot, the battery indicator immediately shows "exhausted battery," and I cannot take a second shot. Turning the camera off, then on, restores the battery indicator to "full," and I can then view the image taken previously. Then I can only take one more shot, etc. 3) when using Powerex 1500mA NIMH rechargables (my intended option), the camera turns on and autofocuses, but I cannot take a shot at all. Pressing the shutter release does nothing, and the battery indicator immediately changes to "exhausted." As with the alkalines, turning the camera off, then on, restores the battery indicator to "full," but I still cannot take a shot. I have conditioned and charged the batteries, so they defintely are not dead. I know the part about changing the custom menu item (d8) to specify which batteries are to be used in the grip, and obviously have selected the proper option. I have inspected all contact points, and nothing seems amiss. Please advise if you have seen this problem before. Because of the weird pattern with two types of batteries, I cannot determine if the problem is with the MB-D200 grip, or if the camera is not recognizing the battery type correctly. I only have one EN-EL3e battery, so I cannot try the option of putting two of them in the grip. I have two weeks to return grip or camera as defective. Thanks in advance for your info.