recently I've installed ConTeXt and after all the complicated configurations I could finally write my first chinese text, but as I tried MetaFun today, I got very strange error message: I tried to compile the trivial sample on the first page of "metafun-p.pdf":

\starttext
\startuseMPgraphic{dummy}
fill fullcircle scaled 5cm withcolor red ;
\stopuseMPgraphic
\useMPgraphic{dummy}
\stoptext

I traced to that line in the file "test-mpgraph.mp" which has been produced by texexec in the first step and I simply deleted it, then I ran "mpost test-mpgraph" manually and got "test-mpgraph.1" without any problem, but as I viewed it with GSview there was only a quarter of disc, which should be a 5cm filled circle. I've also tried with other Metapost files but got always the same result: that line will always be added to the intermedia file. I think it's not because of a wrong configuration of ConTeXt but something "deep inside".

btw. I'm using MikTeX 2.2, ActivePerl 5.8, ConTeXt is the newest version while TeXExec somehow old (v3.1), but I don't think the problem lies there because exept metapost the other part works well, for the configuration of MetaFun I've done following:

I first edited the corresponding part of /texmf/context/config/texexec.ini to be suited to MikTeX, then after refreshing MikTeX name database I did a "texexec --make --alone metafun", it produced metafun.mem in /localtexmf/miktex/fmt, I moved it then to /localtexmf/miktex/mem

now I absolutely have no idea about it... I would be very thankful if someone can tell how to fix around, besides I do want to know what's wrong.