Michelle, try and save it as a PDF and see if that fixes it. I'm running Illustrator CC and Corel X5. I saved it back to CS4 as an ai file and it gave me the issue. When I saved it as the latest version in eps format, it came through fine. I didn't try opening the ai file directly in Corel because I don't think X5 (2 versions old) will open the latest ai file, but I could be wrong.
Try the PDF thing and let us know if that works.
Lasers : Trotec Speedy 300 75W, Trotec Speedy 300 80W, Galvo Fiber Laser 20W
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Real name Steve but that name was taken on the forum. Used Middle name. Call me Steve or Scott, doesn't matter.