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

 Message        An error occurred while attempting to open the
                prototype output file:  <problem>.

 Description    An unexpected error occurred during the creation of a
                prototype output file.  The message text will contain
                additional information about the failure.

 User Action    Correct the condition that caused the failure.