nbs wrote:

Adobe Acrobat's PDFMaker Add-in to Outlook disables program's normal
operation.

Yea, PDFMaker has been mentioned a myriad of times in these newsgroups as
causing conflicts with Outlook. Care must be taken to make sure the version
of PDFMaker installed is compatible with the version of Outlook in use, and
then then, it may be problematic.
--
Brian Tillman [MVP-Outlook]