It sounds like the card you have in slot 1 may be defective or have a problem. You might try switching the two cards in addition to trying the suggestions in John's message. This should be fairly easy to solve. Best of luck!Dave
Copyright © Nikonians 2000, 2013
All Rights Reserved
Nikonians®, NikoScope® and NikoniansAcademy™ are trademarks owned by Nikonians.org.
Nikon®, Nikonos® and Nikkor® are registered trademarks of Nikon Corporation.