I can confirm the error when font cache is empty. After creation of font cache by executing "context test.tex", "contextjit test.tex" ran ok: This is LuajitTeX, Version beta-0.79.1 (TeX Live 2014/W32TeX) (rev 5024) \write18 enabled. open source > 1 > 1 > c:/usr/local/share/texmf-dist/tex/context/base/cont-yes.mkiv ConTeXt ver: 2014.06.27 10:53 MKIV beta fmt: 2014.6.30 int: english/english system > 'cont-new.mkiv' loaded open source > 2 > 2 > c:/usr/local/share/texmf-dist/tex/context/base/cont-new.mkiv close source > 2 > 2 > c:/usr/local/share/texmf-dist/tex/context/base/cont-new.mkiv system > files > jobname 'test', input './test', result 'test' fonts > latin modern fonts are not preloaded languages > language 'en' is active open source > 2 > 3 > c:/usr/work/edrive/send/test.tex fonts > preloading modern-designsize (math) fonts > typescripts > unknown library 'modern-designsize' or 'modern' fonts > 'fallback modern-designsize mm 12pt' is loaded fonts > preloading modern-designsize (mono) fonts > 'fallback modern-designsize tt 12pt' is loaded backend > xmp > using file 'c:/usr/local/share/texmf-dist/tex/context/base/lpdf-pdx.xml' pages > flushing realpage 1, userpage 1 close source > 2 > 3 > c:/usr/work/edrive/send/test.tex close source > 1 > 3 > c:/usr/local/share/texmf-dist/tex/context/base/cont-yes.mkiv mkiv lua stats > used config file: c:/usr/local/share/texmf-dist/web2c/texmfcnf.lua mkiv lua stats > used cache path: c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945 mkiv lua stats > resource resolver: loadtime 0.172 seconds, 2 scans with scantime 0.079 seconds, 0 shared scans, 9 found files, scanned paths: C:/Users/kakuto/texmf c:/windows/fonts mkiv lua stats > stored bytecode data: 351 modules (0.310 sec), 69 tables (0.003 sec), 420 chunks (0.313 sec) mkiv lua stats > running in nuts mode: yes mkiv lua stats > cleaned up reserved nodes: 44 nodes, 443 lists of 442 mkiv lua stats > node memory usage: 2 glue, 2 penalty, 9 attribute, 28 glue_spec, 3 attribute_list, 2 temp mkiv lua stats > node list callback tasks: 6 unique task lists, 5 instances (re)created, 39 calls mkiv lua stats > used backend: pdf (backend for directly generating pdf output) mkiv lua stats > loaded patterns: en::2, load time: 0.000 mkiv lua stats > jobdata time: 0.003 seconds saving, 0.000 seconds loading mkiv lua stats > callbacks: 148 direct, 189 indirect, 337 total mkiv lua stats > result saved in file: test.pdf, compresslevel 3, objectcompresslevel 3 mkiv lua stats > loaded fonts: 4 files: junicode-bold.ttf, junicode-bolditalic.ttf, junicode-italic.ttf, junicode.ttf mkiv lua stats > fonts load time: 0.270 seconds for 6 fonts, 2 shared in backend, 0 common vectors, 2 common hashes mkiv lua stats > used platform: mswin, type: windows, binary subtree: local mkiv lua stats > luatex banner: this is luajittex, version beta-0.79.1 (tex live 2014/w32tex) (rev 5024) mkiv lua stats > control sequences: 38313 of 65536 + 100000 mkiv lua stats > lua properties: engine: luajit, used memory: 38 MB (ctx: 0 MB), hash type: lua51, hash chars: min(64,40), symbol mask: utf () mkiv lua stats > runtime: 0.847 seconds, 1 processed pages, 1 shipped pages, 1.181 pages/second This is LuajitTeX, Version beta-0.79.1 (TeX Live 2014/W32TeX) (rev 5024) \write18 enabled. open source > 1 > 1 > c:/usr/local/share/texmf-dist/tex/context/base/cont-yes.mkiv ConTeXt ver: 2014.06.27 10:53 MKIV beta fmt: 2014.6.30 int: english/english system > 'cont-new.mkiv' loaded open source > 2 > 2 > c:/usr/local/share/texmf-dist/tex/context/base/cont-new.mkiv close source > 2 > 2 > c:/usr/local/share/texmf-dist/tex/context/base/cont-new.mkiv system > files > jobname 'test', input './test', result 'test' fonts > latin modern fonts are not preloaded languages > language 'en' is active open source > 2 > 3 > c:/usr/work/edrive/send/test.tex fonts > preloading modern-designsize (math) fonts > typescripts > unknown library 'modern-designsize' or 'modern' fonts > 'fallback modern-designsize mm 12pt' is loaded fonts > preloading modern-designsize (mono) fonts > 'fallback modern-designsize tt 12pt' is loaded backend > xmp > using file 'c:/usr/local/share/texmf-dist/tex/context/base/lpdf-pdx.xml' pages > flushing realpage 1, userpage 1 close source > 2 > 3 > c:/usr/work/edrive/send/test.tex close source > 1 > 3 > c:/usr/local/share/texmf-dist/tex/context/base/cont-yes.mkiv mkiv lua stats > used config file: c:/usr/local/share/texmf-dist/web2c/texmfcnf.lua mkiv lua stats > used cache path: c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945 mkiv lua stats > resource resolver: loadtime 0.162 seconds, 2 scans with scantime 0.079 seconds, 0 shared scans, 9 found files, scanned paths: C:/Users/kakuto/texmf c:/windows/fonts mkiv lua stats > stored bytecode data: 351 modules (0.301 sec), 69 tables (0.002 sec), 420 chunks (0.303 sec) mkiv lua stats > running in nuts mode: yes mkiv lua stats > cleaned up reserved nodes: 44 nodes, 443 lists of 442 mkiv lua stats > node memory usage: 2 glue, 2 penalty, 9 attribute, 28 glue_spec, 3 attribute_list, 2 temp mkiv lua stats > node list callback tasks: 6 unique task lists, 5 instances (re)created, 39 calls mkiv lua stats > used backend: pdf (backend for directly generating pdf output) mkiv lua stats > loaded patterns: en::2, load time: 0.000 mkiv lua stats > jobdata time: 0.004 seconds saving, 0.001 seconds loading mkiv lua stats > callbacks: 148 direct, 189 indirect, 337 total mkiv lua stats > randomizer: initialized with value 0.66243834988322 mkiv lua stats > result saved in file: test.pdf, compresslevel 3, objectcompresslevel 3 mkiv lua stats > loaded fonts: 4 files: junicode-bold.ttf, junicode-bolditalic.ttf, junicode-italic.ttf, junicode.ttf mkiv lua stats > fonts load time: 0.269 seconds for 6 fonts, 2 shared in backend, 0 common vectors, 2 common hashes mkiv lua stats > used platform: mswin, type: windows, binary subtree: local mkiv lua stats > luatex banner: this is luajittex, version beta-0.79.1 (tex live 2014/w32tex) (rev 5024) mkiv lua stats > control sequences: 38312 of 65536 + 100000 mkiv lua stats > lua properties: engine: luajit, used memory: 38 MB (ctx: 0 MB), hash type: lua51, hash chars: min(64,40), symbol mask: utf () mkiv lua stats > runtime: 0.836 seconds, 1 processed pages, 1 shipped pages, 1.196 pages/second This is LuajitTeX, Version beta-0.79.1 (TeX Live 2014/W32TeX) (rev 5024) \write18 enabled. open source > 1 > 1 > c:/usr/local/share/texmf-dist/tex/context/base/cont-yes.mkiv ConTeXt ver: 2014.06.27 10:53 MKIV beta fmt: 2014.6.30 int: english/english system > 'cont-new.mkiv' loaded open source > 2 > 2 > c:/usr/local/share/texmf-dist/tex/context/base/cont-new.mkiv close source > 2 > 2 > c:/usr/local/share/texmf-dist/tex/context/base/cont-new.mkiv system > files > jobname 'test', input './test', result 'test' fonts > latin modern fonts are not preloaded languages > language 'en' is active open source > 2 > 3 > c:/usr/work/edrive/send/test.tex fonts > preloading modern-designsize (math) fonts > typescripts > unknown library 'modern-designsize' or 'modern' fonts > 'fallback modern-designsize mm 12pt' is loaded fonts > preloading modern-designsize (mono) fonts > 'fallback modern-designsize tt 12pt' is loaded backend > xmp > using file 'c:/usr/local/share/texmf-dist/tex/context/base/lpdf-pdx.xml' pages > flushing realpage 1, userpage 1 close source > 2 > 3 > c:/usr/work/edrive/send/test.tex close source > 1 > 3 > c:/usr/local/share/texmf-dist/tex/context/base/cont-yes.mkiv mkiv lua stats > used config file: c:/usr/local/share/texmf-dist/web2c/texmfcnf.lua mkiv lua stats > used cache path: c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945 mkiv lua stats > resource resolver: loadtime 0.161 seconds, 2 scans with scantime 0.079 seconds, 0 shared scans, 9 found files, scanned paths: C:/Users/kakuto/texmf c:/windows/fonts mkiv lua stats > stored bytecode data: 351 modules (0.301 sec), 69 tables (0.002 sec), 420 chunks (0.303 sec) mkiv lua stats > running in nuts mode: yes mkiv lua stats > cleaned up reserved nodes: 44 nodes, 443 lists of 442 mkiv lua stats > node memory usage: 2 glue, 2 penalty, 9 attribute, 28 glue_spec, 3 attribute_list, 2 temp mkiv lua stats > node list callback tasks: 6 unique task lists, 5 instances (re)created, 39 calls mkiv lua stats > used backend: pdf (backend for directly generating pdf output) mkiv lua stats > loaded patterns: en::2, load time: 0.000 mkiv lua stats > jobdata time: 0.002 seconds saving, 0.001 seconds loading mkiv lua stats > callbacks: 148 direct, 189 indirect, 337 total mkiv lua stats > randomizer: resumed with value 0.66243834988322 mkiv lua stats > result saved in file: test.pdf, compresslevel 3, objectcompresslevel 3 mkiv lua stats > loaded fonts: 4 files: junicode-bold.ttf, junicode-bolditalic.ttf, junicode-italic.ttf, junicode.ttf mkiv lua stats > fonts load time: 0.267 seconds for 6 fonts, 2 shared in backend, 0 common vectors, 2 common hashes mkiv lua stats > used platform: mswin, type: windows, binary subtree: local mkiv lua stats > luatex banner: this is luajittex, version beta-0.79.1 (tex live 2014/w32tex) (rev 5024) mkiv lua stats > control sequences: 38313 of 65536 + 100000 mkiv lua stats > lua properties: engine: luajit, used memory: 38 MB (ctx: 0 MB), hash type: lua51, hash chars: min(64,40), symbol mask: utf () mkiv lua stats > runtime: 0.834 seconds, 1 processed pages, 1 shipped pages, 1.199 pages/second mtx-context | run 1: luajittex --fmt="c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945/formats/luajittex/cont-en" --jobname="test" --lua="c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945/formats/luajittex/cont-en.lui" --no-parse-first-line --c:currentrun=1 --c:engine="luajittex" --c:fulljobname="./test.tex" --c:input="./test.tex" --c:kindofrun=1 --c:maxnofruns=8 "cont-yes.mkiv" mtx-context | run 2: luajittex --fmt="c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945/formats/luajittex/cont-en" --jobname="test" --lua="c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945/formats/luajittex/cont-en.lui" --no-parse-first-line --c:currentrun=2 --c:engine="luajittex" --c:fulljobname="./test.tex" --c:input="./test.tex" --c:kindofrun=2 --c:maxnofruns=8 "cont-yes.mkiv" mtx-context | run 3: luajittex --fmt="c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945/formats/luajittex/cont-en" --jobname="test" --lua="c:/usr/local/share/ctxdir/luatex-cache/context/ca675e2af2f11806418c5ce1dbbdb945/formats/luajittex/cont-en.lui" --no-parse-first-line --c:currentrun=3 --c:engine="luajittex" --c:fulljobname="./test.tex" --c:input="./test.tex" --c:kindofrun=2 --c:maxnofruns=8 "cont-yes.mkiv" system | total runtime: 3.499 seconds Best, Akira