VMS Help CC, Messages, INVPPDIRPEA  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 Message        The preprocessor directive <name> is not allowed in a
                prologue or epilogue file.  The directive is ignored.

 Description    It is not possible for a prologue or epilogue file to
                have this preprocessor directive in it.

 User Action    Remove the offending preprocessor directive from the
                prologue/epilogue file.