are you very sure all files got copied?
and are you very sure all files are in the exact same folder-tree?
if it was me… i would reverify this… or just start over (hoping its still on the old one… i dont know if you moved it or copied it).
I copied stuff from one card to another… and it worked fine for me as far as i remember.
but in all honesty, at that time i didnt have complicated stuff on my card… just easy breasy projects filled with a few files