Exported DXF DWG files no longer work properly

The last time I exported a DXF DWG file to be used in Solidworks was about a year ago, it worked fine just like it did for the last decade. Something has changed in Illustrator within the last year. Solidworks 2017 can’t recognizes exported DXF DWG. I had to install and use Autodesk DWG TrueView to repair exported files from Illustrator, which works after “repaired”.