Error when importing a .ai file when using an Addon


I am currently using the Import Adobe Illustrator, PDF, SVG Addon. I have been using this Addon on previous versions of Blender and this is the first time that I have encountered such a problem. Here are two screen shots of the error windows that are appearing:

I reinstalled Blender and the Addon worked. But when I turned Blender back on the same problem started happening.

Can someone kindly help me out with this issue?