Trouble with updated Context

[<darnold@northcoast.com>]

All,

I am having trouble getting the latest edition of Context to allow me to
work through the Metafun manual.

This, saved as grid.tex:

\setupoutput[pdf]

\runMPgraphicstrue

\setupcolors[state=start]

\startuseMPgraphic{test}
 drawoptions(withpen pencircle scaled 1pt withcolor 0.625yellow);
 draw hlingrid(0,10,1,3cm,3cm);
 draw vlingrid(0,10,1,3cm,3cm);
\stopuseMPgraphic

\starttext

\useMPgraphic{test}

\stoptext

Gives this error when compiled with:

 texexec --pdf grid

(mpgraph.mp (C:\texmf\metapost\context\base\mp-tool.mp)
(C:\texmf\metapost\context\base\mp-spec.mp)
(C:\texmf\metapost\context\base\mp-grph.mp)
(C:\texmf\metapost\context\base\mp-page.mp)
(C:\texmf\metapost\context\base\mp-core.mp)
>> hlingrid
! Improper `addto'.
<to be read again>
                   withpen
draw->...:also(EXPR0)else:doublepath(EXPR0)withpen
                                                  .currentpen.fi._op_
<to be read again>
                   (
l.221 draw hlingrid(
                    0,10,1,3cm,3cm);
?

Does anyone else get the same error after downloading and installing the
latest version of Context?