This is makeindex, version 2.14 [02-Oct-2002] (kpathsea + Thai support). Scanning input file html/simulation-Z-I.idx.... !! Input index error (file = html/simulation-Z-I.idx, line = 138): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 139): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 152): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 298): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 299): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 300): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 301): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 302): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 303): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 304): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 305): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 306): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 307): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 308): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 309): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 310): -- Illegal null field. !! Input index error (file = html/simulation-Z-I.idx, line = 311): -- Illegal null field. done (296 entries accepted, 17 rejected). Sorting entries.....done (2636 comparisons). Generating output file html/simulation-Z-I.ind....done (385 lines written, 0 warnings). Output written in html/simulation-Z-I.ind. Transcript written in html/simulation-Z-I.ilg.