I'm doing some design work where I've been sent an .ai file that opens up in my (older) version of Adobe Illustrator (CS4 or CS5) as a blank box. I've tried opening it using different programmes but no success. I can't figure out how to change the .ai or save as an EPS so I can actually see the image. Is there a way to do this? Do I have to get the latest Illustrator to view? Also, if I am able to open it in my version, would it change the illustration format (the layers, etc.) at all or would I be able to carry on editing as it was left?
Sorry it's such a long winded question, I'm new to using Illustrator as I've been using Photoshop up until now :)