Cross referencing not working?

[Otared Kavian <otared@mac.com>]

In December Giuseppe Bilotta reported that cross referencing had 
disappeared.
Then it came back (at least until two weeks ago...) and again it has 
somehow disappeared, or it has a weird behavoir (from version:
ConTeXt  ver: 2003.1.31  fmt: 2003.2.4  int: english  mes: english)

Below is an example: if I put the "formula 1" before "formula 2" 
nothing gets numbered.
However the other way around "formula 1" gets numbered but not "formula 
2", nor "formula 3".

Any comment is welcomed.
Cheers: OK
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
\starttext
Let us try the cross-reference macros in \ConTeXt: the following should 
be numbered
% this is formula 2
\placeformula[equation2]
$$ 1 + e^{i \pi} = 0. $$
and
% this is formula 1
\startformula[equation1]
1 + e^{i \pi} = 0.
\stopformula
Equation (\in[equation1]) or (\in[equation2]) establishes an intersting 
relation between the most important numbers: $1$, $e$, $i := 
\sqrt{-1}$, $\pi $ and $0$.

However for some unknown reason the \ConTeXt\ commands

\type{\placeformula[equation2]}, \type{\startformula[equation1]} and 
\type{\in[reference]}

do not work anymore\dots{}

And this also should be numbered:
% this is formula 3
\startformula[equation3]
1 + e^{i \pi} = 0.
\stopformula

\bigskip
Where is the problem?
\stoptext