Adobe Acrobat Pro XI pdf maker missing error

Using Windows 7 Enterprise, Office 2013, and ADOBE Acrobat Pro XI.  I can create .pdf within individual Office applications and then combine the individual .pdf using the combine function in Adobe XI; however, I get an error "pdf maker missing" when trying to convert and combine office files dragged directly into the ADOBE XI combine window. 

Yes -  All the individual Office applications have the pdf maker add-in enabled.