UPDATE 6-4-2015: Searched knowledge base, tried all suggestions, didn't work. Deleted printer, reinstalled manually, did repair via Help, uninstalled, then reinstalled Pro XI, nothing worked...except this, via Adobe Support Chat:
Rajat Rawat:click start + r key > type "regedit" > click "HKEY_CURRENT_USER> CLICK "SOFTWARE">CLICK "ADOBE" .
John: There are several folders that begin with "acrobat" they are: Acrobat Distiller, Acrobat Elements, Acrobat PDFMaker, Acrobat Reader. The other folders I see are: Adobe Acrobat, Adobe ARM, Adobe Synchronizer, B9EC881ECA56, CommonFiles, and PDF Settings
Rajat Rawat:delete these acrobat folders: pdfmaker, elements, distiller, adobe acrobat, acrobat reader and PDF Settings.
Rajat Rawat:please make sure your acrobat XI is closed.
I did as suggested, launched Pro XI and Adobe PDF printer now up and running.
Hope this helps....
John M