Hope you are doing well and sorry for the trouble. As described, you are unable to print the DWG document as PDF.
- Would you mind sharing the workflow/steps you are doing to print the document as PDF file?
- What is the version of the Adobe Acrobat DC you are using? To check the version go to Help > About Acrobat and make sure yo uhave the latest version installed. Go to Help > Check for Updates and reboot the computer once.
- Is this a behavior with a particular file or with all the files that you try to print as PDF? Please try with a different file and check.