On Mon, 27 Sep 2010, Marko Schütz Schmuck wrote:

> Dear Aditya,
>
> At Fri, 24 Sep 2010 11:21:01 -0400 (EDT),
> Aditya Mahajan wrote:
>>
>> 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
>
> the setting was
>
> shell_escape = p
>
> and mpost was listed in the permissible commands. I changed it to
>
> shell_escape = 1

That should be t (tee) rather than 1 (one)

   shell_escape = t

> and rebuilt formats. This did not fix my issue.

There is no need to rebuild the formats.

Aditya