Do you have any other non-MS add-ins installed into Word? Are you getting similar errors from any other applications where PDFMaker is installed, such as Excel or Outlook?
The workaround (as this doesn't appear to be affecting functionality) is to open the Word Options, click 'Advanced' then uncheck 'Show add-in user interface errors' under the 'General' section.
I would like to report that I have the exact same problem/error. All updates installed, no errors in outlook or excel.
I'm running vista, office 2007, Acrobat Standard X
I had a demoversion of Acrobat XI installed before I installed X. My thought was, that that might have something to do with the error. During demotime with XI that error didn't appear.
I'm using the same workaround for now, but I actually normally would like to know if my addins produce errors.
Are there any other suggetions?