On Fri, 24 Sep 2010, Marko Schütz Schmuck wrote:

> Dear All,
>
> I only very recently updated from
>
> ConTeXt  ver: 2005.01.31
>
> to
>
> ConTeXt  ver: 2009.08.19 17:10 MKII
>
> Previously, using env-assign.tex as described in a 2006 PracTeX
> article worked fine. With the new version the drop shadow box is not
> rendered.

Do you have write18 enabled (It is disabled by default on most 
distributions). See http://wiki.contextgarden.net/write18

If so, you either need to enable write18 or use \runMPgraphicsfalse on the 
top of your file.

Aditya