Hi Thomas ,
I guess You have your Solid Hatching In crop Views . If so Kindly change all your Solid Hatching into Normal one and Try. I think this will help you to resolve the issue .
Thanks & Regards,
I had same problem. It seems you are printing to pdfs by using file-->print---> printer from PDF conversion software?
Try this.. File ---> save as ---> select file extension a pdf...
It works for me..