Error message no node 5

I use Corel Draw11 to run a Graphtec plotter.  Most customers send art created in Adobe Illustrator as an AI file.  When I import them into Corel, and send to the cutter, I get the same error message on every design.  No node 5. Please help. I am not very techie and need to figure out how to cut these designs.  Btw, the Illustrator is CS3.  Thanks in advance.  I am getting desperate!

  • CorelDRAW Ver. 11 is now thirteen years old. Unfortunately, your customer's Adobe Illustrator is probably much newer than your CorelDRAW, and thus has the more current changes and updates to the creation of the PDF/AI files.

    You can try having the Illy user to back save the AI files to an earlier version of AI and see if that helps.