Hi,

I just finished a first draft version of my adapted mp specials. Sadly 
no test run is possible, as mplib is broken here. I also tested with the 
untouched distribution, but every MP graphic (example attached) produces 
this error message:

-----
This is LuaTeX, Version beta-0.42.0-2009071600 (Web2C 2009)
 \write18 enabled.
(mp.tex

ConTeXt  ver: 2009.07.15 21:49 MKIV  fmt: 2009.7.16  int: english/english

system          : cont-new loaded
(r:/tex/texmf-context/tex/context/base/cont-new.tex
systems         : beware: some patches loaded from cont-new.tex
(r:/tex/texmf-context/tex/context/base/cont-new.mkiv))
system          : cont-fil loaded
(r:/tex/texmf-context/tex/context/base/cont-fil.tex
loading         : ConTeXt File Synonyms
)
system          : cont-sys loaded
(r:/tex/texmf-context/tex/context/user/cont-sys.tex)
system          : mp.top loaded
(mp.top)
fonts           : preloading latin modern fonts
(r:/tex/texmf-context/tex/context/base/type-tmf.tex 
(r:/tex/texmf-context/tex/context/base/type-tmf.mkiv)) 
(r:/tex/texmf-context/tex/context/base/type-siz.tex 
(r:/tex/texmf-context/tex/context/base/type-siz.mkiv)) 
(r:/tex/texmf-context/tex/context/base/type-otf.tex 
(r:/tex/texmf-context/tex/context/base/type-otf.mkiv))
bodyfont        : 12pt rm is loaded
language        : language en is active
color           : system all is global activated
systems         : begin file mp at line 4
mplib           : initializing instance 'metafun' using format 'metafun'
mplib           : loading 'metafun.mp' from 
'r:/tex/texmf-cache/luatex-cache/context/d0b787cd25b9175dc4eaa276af366360/formats/cont-en-metafun.mem'
! Emergency stop.
<inserted text> ...ore.mp ; fi ; ;;;]===], false)}
                                                 
\processMPgraphic ...s ;\!!es , \MPaskedfigure )}}
                                                  \egroup \global 
\MPinstanc...
l.9 \stopMPcode
              
!  ==> Fatal error occurred, no output PDF file produced!MTXrun | run 1: 
luatex 
--fmt="r:/tex/texmf-cache/luatex-cache/context/d0b787cd25b9175dc4eaa276af366360/formats/cont-en" 
--lua="r:/tex/texmf-cache/luatex-cache/context/d0b787cd25b9175dc4eaa276af366360/formats/cont-en.lui" 
--backend=pdf "./mp"
MTXrun | fatal error, return code: 1
-----

No problems with mkii (tested some big example graphics).


Best wishes, Peter