...
resolvers       | formats | using format path 'c:/contextminimal/texmf-cache/luatex-cache/context/5fe67e0bfe781ce0dde776fb1556f32e/formats/luatex'
resolvers       | resolving | using given filetype 'tex'
resolvers       | methods | resolving, method 'concatinators', how 'tag', tag 'file'
resolvers       | resolving | remembering file 'cont-en.mkiv' using hash 'tex::cont-en.mkiv'
resolvers       | formats | using tex source file 'c:/contextminimal/texmf-context/tex/context/base/cont-en.mkiv'
resolvers       | resolving | checking qualified name 'c:/contextminimal/texmf-context/tex/context/base/cont-en.lus'
resolvers       | resolving | using given filetype 'tex'
resolvers       | resolving | remembering file 'c:/contextminimal/texmf-context/tex/context/base/cont-en.lus' using hash 'tex::c:/contextminimal/texmf-context/tex/context/base/cont-en.lus'
resolvers       | resolving | remembering file 'c:/contextminimal/texmf-context/tex/context/base/context.lus' using hash 'tex::c:/contextminimal/texmf-context/tex/context/base/context.lus'
resolvers       | formats | running command: luatex --ini  --lua="c:/contextminimal/texmf-context/tex/context/base/luat-cod.lua" "c:/contextminimal/texmf-context/tex/context/base/cont-en.mkiv" \dumpdump
This is LuaTeX, Version beta-0.87.1 (TeX Live 2016/W32TeX/dev)  (INITEX)
 system commands enabled.
(c:/contextminimal/texmf-context/tex/context/base/cont-en.mkiv (c:/contextminimal/texmf-context/tex/context/base/context.mkiv (c:/contextminimal/texmf-context/tex/context/base/syst-ini.mkiv
! Undefined control sequence.
l.1020 \pdfoutput
                             \zerocount

Please, help me. I'll be glad to profide more info.

Regards,

Vyatcheslav