I did download a new Adobe Acrobat Reader DC and mentioned below, that then the 1040X did show up; it must only be compatible with new version of Adobe Acrobat Reader. But also generates and error "An error exist on this page. Acrobat may not display the page correctly. Please contact the person who created the PDF document to correct the problem."
When you are in Forms mode, go to the black banner then click File and then Print from the dropdown. On the popup, it will say that Adobe Acrobat Reader DC is recommended for viewing or printing the PDF. There will be a link to the website to download that program.
