[NTG-context] problem with Iwona (beta 2012-01-08)

Hi, first of all thanks to Wolfgang and Hans for fixing my TOC problem. :-) The new beta has a problem with the Iwona font. \setupbodyfont[iwona] \starttext foobar \stoptext gives... [..] (test.tex fonts > typescripts > unknown: library 'loc' (R:/tex/texmf-context/tex/context/base/type-imp-iwona.mkiv){R:/tex/texmf/fonts/map/dvips/iwona/iwona-rm.map}{R:/tex/texmf/fonts/map/dvips/iwona/iwona-mi.map}{R:/tex/texmf/fonts/map/dvips/iwona/iwona-sy.map}{R:/tex/texmf/fonts/map/dvips/iwona/iwona-ex.map}{R:/tex/texmf-context/fonts/map/pdftex/context/mkiv-base.map} fonts > virtual math > the mapping is incomplete for 'iwonamath' at 7pt ! LuaTeX error R:/tex/texmf-context/tex/context/base/math-vfu.lua:100: attempt to index field '?' (a nil value) stack traceback: R:/tex/texmf-context/tex/context/base/math-vfu.lua:100: in function 'extension' R:/tex/texmf-context/tex/context/base/math-vfu.lua:474: in function 'addmissing' R:/tex/texmf-context/tex/context/base/math-vfu.lua:903: in function (...tail calls...) R:/tex/texmf-context/tex/context/base/font-def.lua:412: in function 'read' R:/tex/texmf-context/tex/context/base/font-ctx.lua:965: in function 'definefont_two' [string "\directlua "]:1: in main chunk. system > tex > error on line 1 in file test.tex: LuaTeX error ... 1 >> \setupbodyfont[iwona] 2 3 4 \starttext 5 6 foobar 7 8 \stoptext 9 \ctxcommand #1->\directlua {commands.#1} \font_helpers_low_level_define ..._designsize " )} \edef \somefontspec {at \n... \font_helpers_trigger_define ..._identifier_class \csname \v_font_identifier... \font_helpers_set_math_family_a ...ily \endcsname \else \font_helpers_set_ma... \font_helpers_set_math_family_indeed ..._family_a \scriptscriptfont #1\font ... \font_helpers_set_math_family ...amily_indeed #1#2 \fi \else \font_helpers_se... ... l.1 \setupbodyfont[iwona] ? Peter