numbers 1.0.3 files not opening on PC
Hi,
I know I am using a very old version of numbers (1.0.3), but recently when I email a document to PC users, the files can't be openned. Is this because the program is so old? Or is there some other reason this is happening? Any ideas?
Thanks!
MacBook Pro with Retina display, OS X Mountain Lion (10.8.2)