I've recently purchased a new PC. While transferring files I took the opportunity to upgrade to AutoCAD 2018 and updated SW to service pack 3. Now I cannot copy and paste from AutoCAD into a SolidWorks sketch. I've tried: copy with base point, or copy, or ctrl 'C' and they do not insert the drawing into an open sketch. I read a suggestion to resave the AutoCAD file to a lower version but that didn't make a difference. Any ideas?