Library /sys$common/syshlp/dbg$help.hlb DEBUG, Messages, UNAOPNDSF  *Conan The Librarian (sorry for the slow response - running on an old VAX)

 unable to open Debugger Symbol File file_specification

    Facility: DEBUG, VMS Debugger

    Explanation: The Debugger Symbol File (DSF) cannot be opened. The
    accompanying VMS RMS status message gives you more information
    about the reasons for the file not being opened.

    User Action: Examine the VMS RMS status message to determine the
    reasons for the debugger symbol file not being opened, and take
    action based on that information. Also, verify that the logical
    name DBG$IMAGE_DSF_PATH is defined to indicate the proper file.