[tex4ht] what would cause " Can't close file `index.tmp' (file is not open)" --- error --- Illegal storage address

[Nasser M. Abbasi]

This is on texlive 2017. I have large index.tex file, compiling
to HTML. It compiles OK to pdf. about 600 pages.

Near the end, with make4ht, after this command

make4ht --shell-escape --lua -u -c nma.cfg  -e main.mk4 index.tex "htm,3,pic-align,notoc*"

I keep getting an error on a file called index.tmp:

---------------
Compiler:       dvilualatex
Latex options:  -shell-escape -jobname=index
tex4ht.sty :    /cygdrive/x/data/HOME/nma.cfg,htm,3,pic-align,notoc*,charset=utf-8
tex4ht   -cmozhtf -utf8
build_file      /cygdrive/x/data/HOME/main.mk4
Using build file        /cygdrive/x/data/HOME/main.mk4
setting param correct_exit
Adding:         packages        \RequirePackage[dvipdfmx]{graphicx}
setting param correct_exit
setting param correct_exit
setting param correct_exit
setting param ext
setting param ext
Adding:         ext     dvi
LaTeX call: dvilualatex -shell-escape -jobname=index  '\makeatletter\def\HCode{\futurelet\HCode\HChar}\def\HChar{\ifx"\HCode\def\HCode"##1"{\Link##1}\expandafter\HCode\else\expandafter\Link\fi}\def\Link#1.a.b.c.{\g at addto@macro\@documentclasshook{\RequirePackage[#1,html]{tex4ht}\RequirePackage[dvipdfmx]{graphicx}}\let\HCode\documentstyle\def\documentstyle{\let\documentstyle\HCode\expandafter\def\csname tex4ht\endcsname{#1,html}\def\HCode####1{\documentstyle[tex4ht,}\@ifnextchar[{\HCode}{\documentstyle[tex4ht]}}}\makeatother\HCode /cygdrive/x/data/HOME/nma.cfg,htm,3,pic-align,notoc*,charset=utf-8.a.b.c.\input index.tex'
This is LuaTeX, Version 1.0.4 (TeX Live 2017)
  system commands enabled.
.....

Output written on index.dvi (402 pages, 2412000 bytes).
Transcript written on index.log.
Make4ht: tex4ht  -cmozhtf -utf8 "index.dvi"
----------------------------
tex4ht.c (2012-07-25-19:36 kpathsea)
tex4ht -cmozhtf
   -utf8
   index.dvi
.....
......
  file index.tmp
  file index.tmp
  file index.tmp
] [21 file index.tmp
--- warning --- Can't close file `index.tmp' (file is not open)
--- error --- Illegal storage address
Make4ht: Fatal error. Command tex4ht returned exit code 256
-----------------

I removed all temporary files. Tried this on both linux and
cygwin. And still get this error.

Has any one seen such an error before. I am not sure where
to look to debug this more now. THe file index.tmp at the end
looks to be corrupted. It has size of one byte only.

At the end, I see index.idv having zero byte size and index.tmp
having 1 byte size. So something went wrong.

Any idea what to look for or try? I put index.log and
index.tmp  files here

         https://www.12000.org/tmp/052418/

if someone wants to look at them.

Will keep trying to find what is wrong.
thanks for any hints.

--Nasser