Convert Illustrator CS5 to CS3 or older version
See complete article below…which is great….although it doesn’t completely solve everyone’s issue…
What if you are using CS3 or CS4 and someone hands you a CS5 Illustrator eps. Oops. Here’s what you do…
There is a simple work around for Mac users. You should be able to open the file in question (CS3, CS4 or any other version) using Apple’s default “Preview” Application. Once the file is open you can then “Save As” a “PDF” version. Once saved as a “PDF” you should be able to open the file in any version of Illustrator you are running on your system…Mac or PC.
Downsaving in Adobe Illustrator
THIS IS THE BETTER OPTION….if you can remember to do it.
For all of you who can’t figure it out (or keep forgetting how to down-save, like me), here is a quick tutorial: