same problem here with latest tl2012-pretest # context test mtx-context | run 1: luatex --fmt="/media/LaCie/opt/luatex/texlive/2012/texmf-var/luatex-cache/context/2448223e6631addb83df348d74153606/formats/cont-en" --lua="/media/LaCie/opt/luatex/texlive/2012/texmf-var/luatex-cache/context/2448223e6631addb83df348d74153606/formats/cont-en.lui" --backend="pdf" "./test" \stoptext This is LuaTeX, Version beta-0.70.1-2012051323 (TeX Live 2012) \write18 enabled. (test.tex ConTeXt ver: 2012.05.14 16:00 MKIV fmt: 2012.5.17 int: english/english system > cont-new.mkiv loaded (/media/LaCie/opt/luatex/texlive/2012/texmf-dist/tex/context/base/cont-new.mkiv system > beware: some patches loaded from cont-new.mkiv ) system > test.top loaded (test.top) fonts > latin modern fonts are not preloaded languages > language en is active {/media/LaCie/opt/luatex/texlive/2012/texmf-dist/fonts/map/pdftex/context/mkiv-base.map} fonts > preloading latin modern fonts (second stage) fonts > typescripts > unknown: library 'loc' {/media/LaCie/opt/luatex/texlive/2012/texmf-dist/fonts/map/dvips/lm/lm-math.map}{/media/LaCie/opt/luatex/texlive/2012/texmf-dist/fonts/map/dvips/lm/lm-rm.map} fonts > virtual math > unable to resolve name mapsfromchar fonts > fallback modern rm 12pt is loaded backend > xmp > using file '/media/LaCie/opt/luatex/texlive/2012/texmf-dist/tex/context/base/lpdf-pdx.xml' mtx-context | fatal error: no return code, message: luatex: execution interruptedroot@luigicasa-laptop:/media/LaCie/opt/luatex/texlive/texmf-local/tex/context/local# Linux .... 2.6.32-41-generic-pae #89-Ubuntu SMP Fri Apr 27 23:59:24 UTC 2012 i686 GNU/Linux ubuntu 10.04 lts 32bit -- luigi