flowchart strangeness

["Binx Bolling" <binxboll@hotmail.com>]

Why does the appended context flowchart generate an error? If I uncomment 
the block at the end, it processes without a problem. It seems that problems 
sometimes arise if the last cell is between a \bgroup \egroup pair. I would 
like to enclose some cells that way in order to change attributes.

Thanks,
bb

%output=pdf

\usemodule[chart]
\starttext
\startFLOWchart[cells]

  \startFLOWcell
    \name {A}
    \location{1,1}
    \shape{action}
    \text{Box A}
    \connection[bt]{B}
  \stopFLOWcell
{
  \startFLOWcell
    \name {B}
    \location{1,2}
    \shape{action}
    \text{Box B}
  \stopFLOWcell
}

%  \startFLOWcell
%    \name {C}
%    \location{1,3}
%    \shape{action}
%    \text{Box C}
%  \stopFLOWcell

\stopFLOWchart
\FLOWchart[cells]
\stoptext

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