Hello,
I installed context according to this page on my Fedora 15 system.
Installation seems to went well. But after runing context on this document:

\starttext
\externalfigure[http://donsmaps.com/images7/lucy2reconstsmh.jpg]
\stoptext

I got this strange output:

mtx-context     | run 1: luatex
--fmt="/var/lib/texmf/luatex-cache/context/254f26b81d3615bc933c9bf20a856557/formats/cont-en"
--lua="/var/lib/texmf/luatex-cache/context/254f26b81d3615bc933c9bf20a856557/formats/cont-en.lui"
--backend="pdf" "./a.tex"
This is LuaTeX, Version beta-0.70.1-2012020407 (rev 4277)
 \write18 enabled.
(a.tex

ConTeXt  ver: 2011.05.18 18:04 MKIV  fmt: 2012.2.6  int: english/english

system          > cont-new.mkiv loaded
(/usr/share/texlive/texmf-dist/tex/context/base/cont-new.mkiv
system          > beware: some patches loaded from cont-new.mkiv
)
system          > a.top loaded
(a.top)
fonts           > latin modern fonts are not preloaded
languages       > language en is active
{/usr/share/texlive/texmf-dist/fonts/map/pdftex/context/mkiv-base.map}
fonts           > preloading latin modern fonts (second stage)
(/usr/share/texlive/texmf-dist/tex/context/base/type-siz.mkiv)
(/usr/share/texlive/texmf-dist/tex/context/base/type-otf.mkiv){/usr/share/texlive/texmf-dist/fonts/map/dvips/lm/lm-math.map}{/usr/share/texlive/texmf-dist/fonts/map/dvips/lm/lm-rm.map}
fonts           > virtual math > unable to resolve name mapsfromchar
fonts           > fallback modern rm 12pt is loaded
system          > begin file a.tex at line 1
backend         > xmp > using file
'/usr/share/texlive/texmf-dist/tex/context/base/lpdf-pdx.xml'

mtx-context     | fatal error: no return code, message: luatex: execution
interrupted


Can enyone advise me what to do?