[NTG-context] Problem with Context ver: 2006.09.11 14:37 MK II fmt: 2006.9.12 int: english/english

[WN]

When I compile my documents with the new version of Context (beta)
I get the following error (see below) with some of my metapost code which
uses \sometxt.
 
Does anybody knows how to fix this ?
Thanks
Wim

 >texmfstart texexec --autopdf --pdf cart.tex
TeXExec | processing document 'cart.tex'
TeXExec | no ctx file found
TeXExec | tex processing method: context
TeXExec | TeX run 1
TeXExec | writing option file cart.top
TeXExec | using randomseed 1247
TeXExec | tex engine: pdfetex
TeXExec | tex format: cont-en
TeXExec | progname: context
This is pdfeTeX, Version 3.141592-1.30.3-2.2 (Web2c 7.5.5)
 \write18 enabled.
 (f:\context\usr\local\context\tex\texmf-local/web2c/natural.tcx)
entering extended mode
(./cart.tex

ConTeXt  ver: 2006.09.11 14:37 MK II  fmt: 2006.9.12  int: english/english
...
color           : currentcolor (def) is not defined
savetxt(1,64.06398pt,7.43599pt,0.15399pt) shifted (0,-0.15399pt);
! TeX capacity exceeded, sorry [input stack size=10000].
\@xob at cart-mpgraph ->\@xob at cart-mpgraph
                                        ,1
\@xob at cart-mpgraph ->\@xob at cart-mpgraph
                                        ,1
\@xob at cart-mpgraph ->\@xob at cart-mpgraph
                                        ,1
\@xob at cart-mpgraph ->\@xob at cart-mpgraph
                                        ,1
\@xob at cart-mpgraph ->\@xob at cart-mpgraph
                                        ,1
\@xob at cart-mpgraph ->\@xob at cart-mpgraph
                                        ,1
...