When I attempted to use my nikkor 70-180 macro on my D300, i got an fEE flashing in the viewfinder. The auto focus works but I can't get a meter reading regardless of the mode I am in. I attempted to use it in manual mode and the same thing occurs. I know it probably needs to go see the doctor, but thought I would ask if there is anything I can try before sending it in. Thanks for your time.