> There are other templates which does some calculations.. the output tree is
missing the end tag of </kingdom>
>
>
You could be hitting a bug: see for example

https://saxonica.plan.io/issues/2830
https://saxonica.plan.io/issues/2841

Streaming in Saxon is still work in progress, and although it's been supported
in some form for a while now, the scope of what can be streamed has been
increasing steadily in successive releases, while test coverage has sometimes
been lagging a bit behind.

Please submit a repro for the problem on http://saxonica.plan.io, and if
appropriate I will add it to the W3C test suite.
> Making it invalid xml. I am thinking that the processor stopped writing the
result tree after a point for some.reason... and did not throw any
exception..
>
> I am also thinking Saxon is playing with me because i am playing with it
,(eval version) because some times it says .. can not run it now, please try
later or some such thing. Hopefully this is something trivial..
>
>

This is documented behaviour for the evaluation license: see
http://www.saxonica.com/download/download.xml

...an evaluation license has two restrictions designed to discourage
production use: firstly, the license is disabled for a randomly-chosen period
of about 10 minutes in any day, and secondly, on about 1% of runs, it will
insert random asterisks into serialized output.

Michael Kay
Saxonica