Has copy listing broken!

Hi
Yesterday I tried to upload 8 new items by using copy listing from within Item Inventory.
I have done this many times before as many of my items are similar.
Anyway I changed the parts that needed changing, like pictures, description, title and
price and entered them. Not one of them actually worked, does not even show up in
my inventory, looks like I did not do anything at all
Today I went to try it again and when I try and copy any item in my inventory list
a blank page comes up, that is all, just blank.
Has something changed or has something broken?

Thank You

CArol