Hi there and welcome
Sorry but the cameras are not compatible with the size of the card.
They only work with cards up to 2GB
This is why you get the error
you will need to return them and use only a 2GB card
If you would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.