On Tue, 2012-02-21 at 05:32 +0100, Wolfgang Schuster wrote:
> The same problem was reported a few days ago and fixed in the beta.
> 
> If you cant wait use \startdefintion[reference=,title=] which does work.
> 
> Wolfgang

Hey Wolfgang,

This is what I observed with ConTeXt 2012.02.20 01:42. Perhaps it has
been fixed since, but this is a build from only yesterday so perhaps
not.

...
structure       > sectioning > subsubsubject @ level 5 : 0.7.1.0.0 -> \bf 3 Libra, 14 B.R.
graphics        > invalid region for 'tbg:1'
! LuaTeX error /usr/share/texmf/tex/context/base/anch-pgr.lua:530: attempt to index field 'list' (a nil value)
stack traceback:
	/usr/share/texmf/tex/context/base/anch-pgr.lua:530: in function 'fetchmultipar'
	/usr/share/texmf/tex/context/base/anch-pgr.lua:569: in function 'fetchmultipar'
	<main ctx instance>:1: in main chunk.
\ctxcommand ...\directlua \zerocount {commands.#1}
                                                  
<argument> ...tipars {\MPvar {self}}{\MPanchorid }
                                                   ; \includeMPgraphic {\MPv...
\meta_process_graphic ...graphicformat ", \!!bs #1
                                                  ;\!!es , \!!bs \meta_flush...
\anch_positions_meta_graphic_use ...#3\stopMPcode 
                                                  \endgroup 
\anch_positions_meta_graphic_nested ...graphic #2}
                                                  \endgroup 
\anch_positions_meta_graphic_direct_indeed ...ame 
                                                  \removelastspace }\smashbo...
...
l.34 ... and the methane/oxygen return propellant.
                                                  
? E
You want to edit file Source/Timeline/01_Promises_Made.tex at line 34

The line it is referring to has nothing unusual on it and hasn't
changed in the weeks of several compilation.

-- 
Kip Warner -- Software Engineer
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http://www.thevertigo.com