This is MakeIndex, version 3.0.8 [31 Dec 91].

** Input style error (file = mkind.ist, line = 0):
   -- Style file 'mkind.ist' not found.Scanning input file manual.idx....
!! Input index error (file = manual.idx, line = 139):
   -- Illegal null field.

done (198 entries accepted, 1 rejected).
Sorting entries.....done (1527 comparisons).
Generating output file manual.ind....
done (290 lines written, 0 warnings).
Output written in manual.ind.
Transcript written in manual.ilg.