How do you mean "the files were empty"? Filled with all binary zero? Black image? Zero byte size? Deleted?
And just a tip. Do it this way:
1. Copy from sd card to pc.
2. Check they are OK.
3. Make your usual backup of these files (dropbox? external hard disk? picasa?)
4. Delete them from the sd card only if step 1, 2 and 3 are succesful.
I was cutting and pasting files from my sd card to my pc when i went in to check the files on my pc they were empty.
Is there any way to recover these files or am I s.o.l. ?