SD card issue Class 4 Sandisk

[Boomerang]

So I have a large shoot this weekend. I purchased 8 Panasonic 16gig Class6 cards and for back up 12 16gig Sandisk class4 cards.


Well the panasonic cards work fine.

Everytime I try to move the Private folder off the Sandisk it ejects the card and has an error.

Very frustrated.... not sure if the class 4 has anything to do with it.

All cards formatted in camera.

it just ejects on all my computers..... ah no good.....

 

[Boomerang]

Would it hurt the camera to connect it and use the HMC as the USB drive..... just may be a reader not working with the card.

I tried my D90 same results card just ejects... tried two of the same kind class 4 and no luck yet.

The clips do play back in camera...

 

[ullanta]

Any chance they're write-protected?