Hi,
I have experienced the same.. all the sudden many many of the pictures are totally blank and there is no way to get anything from them. Its interesting they are around 26MB in size for the raw file (different pics, different size, so it is not all just black), so it wrote something in the file, but I wonder what could be causing that.
I wonder if it is the memory card which it is damaged?? No idea.
Have you got any solutions for it?
Thanks in advance.