New Office 2007 install - PowerPoint error message - "Couldn't install add-in."

I just upgraded a user from Office 2003 to Office 2007.  After activating Office 2007, when I go into PowerPoint, I get this message:

"PowerPoint couldn't load the add-in C:\Program Files\Adobe\Acrobat 6.0\PDFMaker\PDFMaker.ppa."

When I go to Manage Add-ins, that one doesn't show up.  More importantly, when I explore to that location, there is no PDFMaker.ppa file under the PDFMaker folder.   I was able to use this code that I found online in the PowerPoint VBA Editor:

Sub ListAddins()

    Dim oAddin As AddIn
    Dim oCOMAddin As COMAddIn
    Dim sAddins As String

    sAddins = "Standard Add-ins" & vbCrLf & "================" & vbCrLf
    For Each oAddin In Application.AddIns
        sAddins = sAddins & oAddin.Name & vbCrLf  & vbTab & oAddin.FullName & vbCrLf
    Next oAddin

    sAddins = sAddins & vbCrLf & "COM Add-ins" & vbCrLf & "============" & vbCrLf
    For Each oCOMAddin In Application.COMAddIns
        sAddins = sAddins & oCOMAddin.ProgID & vbCrLf & vbTab & oCOMAddin.Description & vbcrlf
    Next oCOMAddin

    MsgBox sAddins

End Sub

The result I got is attached, but it basically showed that PDFMaker.ppa as one of the add-ins.  

So how do I get rid of an add-in that doesn't show up in the Manage Add-Ins screen, and that doesn't even seem to exist?  Hitting OK to the message every time PowerPoint is opened isn't an option - the user this was installed for is the COO of our company.

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