This is C:\texmf\miktex\bin\makeindex.EXE, version 2.14 [02-Oct-2002] (kpathsea + Thai support).
Scanning input file thesis_defense.bm...
!! Input index error (file = thesis_defense.bm, line = 1):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 2):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 3):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 4):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 5):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 6):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 7):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 8):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 9):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 10):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 11):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 12):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 13):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 14):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 15):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 16):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 17):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 18):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 19):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 20):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 21):
   -- Unknown index keyword \pdbookmark.
!! Input index error (file = thesis_defense.bm, line = 22):
   -- Unknown index keyword \pdbookmark.
done (0 entries accepted, 22 rejected).
Nothing written in thesis_defense.ind.
Transcript written in thesis_defense.ilg.