"No pictures" even though file folder shows pics

On a BB 9800 Torch, OS 6.0.0.600.

I had a 4GB microSD card that came with the BB. I recently got an 8GB card, copied the full contents of the 4GB to my PC, copied from my PC to the 8GB, and inserted the 8GB to the BB. I can see all the files I expected to see when using Applications >> Files >> Media Card.

However, when I open Media >> Pictures, I get a title screen showing the message "No pictures". Same goes for Camera >> View Pictures.

Camera >> Options has Store Pictures set to "On Media Card".

When I take a picture with the camera, I see a thumbnail preview of that picture in the lower-left corner, but clicking it won't view the picture and neither will Camera >> View Pictures...it still has "No pictures".

However, if I use Applications >> Files and browse to File Folders >> Media Card >> BlackBerry >> camera, I can see my newly taken image along with dozens of previously taken photos.

Thoughts on what to try next?

You need to format the new card then put everything back on, I had the same issue when I tried to update my phone from OS5 to OS6 several months ago. I still haven't gotten around to pulling everything off and reformatting.