How do I save my diagram using dia?

[Johann Spies <jhspies@adept.co.za>]

System: Potato.

When using dia, there is no option to save a new diagram and
everything is lost when I exit.  

I have used dia on Slink and did not have this problem.

I have also tried 

dia -e /tmp/diagram

But it just quits without saving everything.

I have also tried the following:
---------------------
$touch /tmp/diagram
-----------------------------
And then
-------------------------------------
$dia /tmp/diagram -e /tmp/diagram.ps
/tmp/diagram:1: error: Document is empty

^
Need valid input file
----------------------------------------

The man page and the /usr/doc/dia/README does not shed any light on
this.

Also opening one of dia's example files and modifying it, does not
anywhere make it possible to save the modified file.

Am I stupid or is this a bug?

Johann
-- 
J.H. Spies - Tel. 082 782 0336 / 023 55 11 568
     "But I will hope continually, and will yet praise thee 
      more and more."                  Psalms 71:14