Thank You Karl ...
(Jason was one of the internet "answer" guys that did not fix the problem.)
I am using Acrobat XI / Office 2007 but have Visio and Project 2010 on a Windows 8 machine.
When I try to combine files, I get an error "Missing PDFMaker files" ... Do you want to run repair?
I tried this; repairing Acrobat, uninstalling Acrobat and re-installing it, and repairing Office .... all with the same result.
I checked on the Internet and it directed me to look at the Offcie addins for PDFMakerOfficeAddin.dll and it is enabled on Word / Excel etc.
I even tried a Windows Restore with no luck.
Any idea where this gremlin is hiding?
Thanks for your attention to this .... I am lost,
David Cowden