Vista 7 Exception Code c0000005 Crashes Word2007 when I click the Embed Video icon

Here is my issue: the PDFmaker addin dll crashes and I have to re-add it every time I click the Embed Video icon to insert a clip. :-(
Any suggestions as to how I can fix it?
Thanks!
joan

Problem signature:
Problem Event Name: APPCRASH
Application Name: WINWORD.EXE
Application Version: 12.0.4518.1014
Application Timestamp: 45428028
Fault Module Name: PDFMWord.dll
Fault Module Version: 9.0.0.0
Fault Module Timestamp: 4850c2cd
Exception Code: c0000005
Exception Offset: 000afa5d
OS Version: 6.1.7601.2.1.0.256.48
Locale ID: 1033

Additional information about the problem:
LCID: 1033
Brand: Office12Crash
skulcid: 1033