Cannot combine PDF's w/Acrobat X (SBS 2011 domain)

All systems running Win 7 Professional.  We've manually added DEP exclsuion for Acrobat X Pro, and even tried running the app as administrator.

No matter what we do we continue to get a DEP error (see attached).  We've also disabled anti-virus as well to no avail.

Any suggestions would be much appreciated.

Thanks,

Robert

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